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Finding the Fourth Proportional to 359,385.80, 539,078.70 and 247,411.40

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Solution

The fourth proportional to 359,385.80, 539,078.70 and 247,411.40 is: 371,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,385.80 : 539,078.70 = 247,411.40 : x
  2. Step 2: Convert to fraction form
    359,385.80/539,078.70 = 247,411.40/x
  3. Step 3: Cross multiply
    359,385.80x = 539,078.70 × 247,411.40
  4. Step 4: Simplify right side
    359,385.80x = 133,374,215,877.18
  5. Step 5: Solve for x
    x = 133,374,215,877.18/359,385.80
  6. Step 6: Final answer
    x = 371,117.10

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1.5x scale

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.