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Finding the Fourth Proportional to 338,859.74, 508,280.96 and 89,543.90

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Solution

The fourth proportional to 338,859.74, 508,280.96 and 89,543.90 is: 134,313.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,859.74 : 508,280.96 = 89,543.90 : x
  2. Step 2: Convert to fraction form
    338,859.74/508,280.96 = 89,543.90/x
  3. Step 3: Cross multiply
    338,859.74x = 508,280.96 × 89,543.90
  4. Step 4: Simplify right side
    338,859.74x = 45,513,459,454.14
  5. Step 5: Solve for x
    x = 45,513,459,454.14/338,859.74
  6. Step 6: Final answer
    x = 134,313.56

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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.