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Finding the Fourth Proportional to 387,560.80, 581,352.54 and 107,078.32

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Solution

The fourth proportional to 387,560.80, 581,352.54 and 107,078.32 is: 160,620.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,560.80 : 581,352.54 = 107,078.32 : x
  2. Step 2: Convert to fraction form
    387,560.80/581,352.54 = 107,078.32/x
  3. Step 3: Cross multiply
    387,560.80x = 581,352.54 × 107,078.32
  4. Step 4: Simplify right side
    387,560.80x = 62,250,253,310.93
  5. Step 5: Solve for x
    x = 62,250,253,310.93/387,560.80
  6. Step 6: Final answer
    x = 160,620.61

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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.