Home / 210,867.20-290,992.20-115,373.60

Finding the Fourth Proportional to 210,867.20, 290,992.20 and 115,373.60

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Solution

The fourth proportional to 210,867.20, 290,992.20 and 115,373.60 is: 159,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,867.20 : 290,992.20 = 115,373.60 : x
  2. Step 2: Convert to fraction form
    210,867.20/290,992.20 = 115,373.60/x
  3. Step 3: Cross multiply
    210,867.20x = 290,992.20 × 115,373.60
  4. Step 4: Simplify right side
    210,867.20x = 33,572,817,685.92
  5. Step 5: Solve for x
    x = 33,572,817,685.92/210,867.20
  6. Step 6: Final answer
    x = 159,213.09

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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.