Home / 210,416,154,952.32-290,395,936,394.32-128,022,763,864.70

Finding the Fourth Proportional to 210,416,154,952.32, 290,395,936,394.32 and 128,022,763,864.70

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Solution

The fourth proportional to 210,416,154,952.32, 290,395,936,394.32 and 128,022,763,864.70 is: 176,684,582,040.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,416,154,952.32 : 290,395,936,394.32 = 128,022,763,864.70 : x
  2. Step 2: Convert to fraction form
    210,416,154,952.32/290,395,936,394.32 = 128,022,763,864.70/x
  3. Step 3: Cross multiply
    210,416,154,952.32x = 290,395,936,394.32 × 128,022,763,864.70
  4. Step 4: Simplify right side
    210,416,154,952.32x = 37,177,290,392,278,470,230,016
  5. Step 5: Solve for x
    x = 37,177,290,392,278,470,230,016/210,416,154,952.32
  6. Step 6: Final answer
    x = 176,684,582,040.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.