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Finding the Fourth Proportional to 387,347.80, 581,055.16 and 106,865.04

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Solution

The fourth proportional to 387,347.80, 581,055.16 and 106,865.04 is: 160,306.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,347.80 : 581,055.16 = 106,865.04 : x
  2. Step 2: Convert to fraction form
    387,347.80/581,055.16 = 106,865.04/x
  3. Step 3: Cross multiply
    387,347.80x = 581,055.16 × 106,865.04
  4. Step 4: Simplify right side
    387,347.80x = 62,094,482,915.61
  5. Step 5: Solve for x
    x = 62,094,482,915.61/387,347.80
  6. Step 6: Final answer
    x = 160,306.79

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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.