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Finding the Fourth Proportional to 539,410.93, 809,130.98 and 140,042.86

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Solution

The fourth proportional to 539,410.93, 809,130.98 and 140,042.86 is: 210,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,410.93 : 809,130.98 = 140,042.86 : x
  2. Step 2: Convert to fraction form
    539,410.93/809,130.98 = 140,042.86/x
  3. Step 3: Cross multiply
    539,410.93x = 809,130.98 × 140,042.86
  4. Step 4: Simplify right side
    539,410.93x = 113,313,016,553.80
  5. Step 5: Solve for x
    x = 113,313,016,553.80/539,410.93
  6. Step 6: Final answer
    x = 210,068.08

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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.