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Finding the Fourth Proportional to 539,165.20, 808,920.60 and 361,872.40

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Solution

The fourth proportional to 539,165.20, 808,920.60 and 361,872.40 is: 542,924.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,165.20 : 808,920.60 = 361,872.40 : x
  2. Step 2: Convert to fraction form
    539,165.20/808,920.60 = 361,872.40/x
  3. Step 3: Cross multiply
    539,165.20x = 808,920.60 × 361,872.40
  4. Step 4: Simplify right side
    539,165.20x = 292,726,038,931.44
  5. Step 5: Solve for x
    x = 292,726,038,931.44/539,165.20
  6. Step 6: Final answer
    x = 542,924.58

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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.