Home / 420,763.83-631,151.33-140,281.17

Finding the Fourth Proportional to 420,763.83, 631,151.33 and 140,281.17

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Solution

The fourth proportional to 420,763.83, 631,151.33 and 140,281.17 is: 210,423.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,763.83 : 631,151.33 = 140,281.17 : x
  2. Step 2: Convert to fraction form
    420,763.83/631,151.33 = 140,281.17/x
  3. Step 3: Cross multiply
    420,763.83x = 631,151.33 × 140,281.17
  4. Step 4: Simplify right side
    420,763.83x = 88,538,646,318.05
  5. Step 5: Solve for x
    x = 88,538,646,318.05/420,763.83
  6. Step 6: Final answer
    x = 210,423.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.