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Finding the Fourth Proportional to 338,705.28, 508,550.40 and 249,125.76

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Solution

The fourth proportional to 338,705.28, 508,550.40 and 249,125.76 is: 374,050.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,705.28 : 508,550.40 = 249,125.76 : x
  2. Step 2: Convert to fraction form
    338,705.28/508,550.40 = 249,125.76/x
  3. Step 3: Cross multiply
    338,705.28x = 508,550.40 × 249,125.76
  4. Step 4: Simplify right side
    338,705.28x = 126,693,004,898.30
  5. Step 5: Solve for x
    x = 126,693,004,898.30/338,705.28
  6. Step 6: Final answer
    x = 374,050.87

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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.