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Finding the Fourth Proportional to 338,751.48, 508,148.82 and 89,427

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Solution

The fourth proportional to 338,751.48, 508,148.82 and 89,427 is: 134,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,751.48 : 508,148.82 = 89,427 : x
  2. Step 2: Convert to fraction form
    338,751.48/508,148.82 = 89,427/x
  3. Step 3: Cross multiply
    338,751.48x = 508,148.82 × 89,427
  4. Step 4: Simplify right side
    338,751.48x = 45,442,224,526.14
  5. Step 5: Solve for x
    x = 45,442,224,526.14/338,751.48
  6. Step 6: Final answer
    x = 134,146.20

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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.