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Finding the Fourth Proportional to 387,337.20, 580,811.40 and 176,737.20

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Solution

The fourth proportional to 387,337.20, 580,811.40 and 176,737.20 is: 265,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,337.20 : 580,811.40 = 176,737.20 : x
  2. Step 2: Convert to fraction form
    387,337.20/580,811.40 = 176,737.20/x
  3. Step 3: Cross multiply
    387,337.20x = 580,811.40 × 176,737.20
  4. Step 4: Simplify right side
    387,337.20x = 102,650,980,564.08
  5. Step 5: Solve for x
    x = 102,650,980,564.08/387,337.20
  6. Step 6: Final answer
    x = 265,017.10

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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.