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Finding the Fourth Proportional to 280,656.53, 387,306.39 and 159,797.87

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Solution

The fourth proportional to 280,656.53, 387,306.39 and 159,797.87 is: 220,521.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,656.53 : 387,306.39 = 159,797.87 : x
  2. Step 2: Convert to fraction form
    280,656.53/387,306.39 = 159,797.87/x
  3. Step 3: Cross multiply
    280,656.53x = 387,306.39 × 159,797.87
  4. Step 4: Simplify right side
    280,656.53x = 61,890,736,159.39
  5. Step 5: Solve for x
    x = 61,890,736,159.39/280,656.53
  6. Step 6: Final answer
    x = 220,521.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.