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Finding the Fourth Proportional to 389,337.76, 584,007.18 and 108,854.74

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Solution

The fourth proportional to 389,337.76, 584,007.18 and 108,854.74 is: 163,282.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,337.76 : 584,007.18 = 108,854.74 : x
  2. Step 2: Convert to fraction form
    389,337.76/584,007.18 = 108,854.74/x
  3. Step 3: Cross multiply
    389,337.76x = 584,007.18 × 108,854.74
  4. Step 4: Simplify right side
    389,337.76x = 63,571,949,737.03
  5. Step 5: Solve for x
    x = 63,571,949,737.03/389,337.76
  6. Step 6: Final answer
    x = 163,282.26

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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.