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Finding the Fourth Proportional to 354,338.40, 532,326.80 and 243,746.40

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Solution

The fourth proportional to 354,338.40, 532,326.80 and 243,746.40 is: 366,183.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,338.40 : 532,326.80 = 243,746.40 : x
  2. Step 2: Convert to fraction form
    354,338.40/532,326.80 = 243,746.40/x
  3. Step 3: Cross multiply
    354,338.40x = 532,326.80 × 243,746.40
  4. Step 4: Simplify right side
    354,338.40x = 129,752,741,123.52
  5. Step 5: Solve for x
    x = 129,752,741,123.52/354,338.40
  6. Step 6: Final answer
    x = 366,183.12

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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.