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Finding the Fourth Proportional to 338,841.28, 508,280.16 and 89,516.48

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Solution

The fourth proportional to 338,841.28, 508,280.16 and 89,516.48 is: 134,279.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,841.28 : 508,280.16 = 89,516.48 : x
  2. Step 2: Convert to fraction form
    338,841.28/508,280.16 = 89,516.48/x
  3. Step 3: Cross multiply
    338,841.28x = 508,280.16 × 89,516.48
  4. Step 4: Simplify right side
    338,841.28x = 45,499,450,777.04
  5. Step 5: Solve for x
    x = 45,499,450,777.04/338,841.28
  6. Step 6: Final answer
    x = 134,279.54

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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.