Home / 210,718.83-290,787.55-115,225.45

Finding the Fourth Proportional to 210,718.83, 290,787.55 and 115,225.45

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Solution

The fourth proportional to 210,718.83, 290,787.55 and 115,225.45 is: 159,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,718.83 : 290,787.55 = 115,225.45 : x
  2. Step 2: Convert to fraction form
    210,718.83/290,787.55 = 115,225.45/x
  3. Step 3: Cross multiply
    210,718.83x = 290,787.55 × 115,225.45
  4. Step 4: Simplify right side
    210,718.83x = 33,506,126,303.15
  5. Step 5: Solve for x
    x = 33,506,126,303.15/210,718.83
  6. Step 6: Final answer
    x = 159,008.70

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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.