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Finding the Fourth Proportional to 272,925.80, 409,446.30 and 85,956.20

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Solution

The fourth proportional to 272,925.80, 409,446.30 and 85,956.20 is: 128,952.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,925.80 : 409,446.30 = 85,956.20 : x
  2. Step 2: Convert to fraction form
    272,925.80/409,446.30 = 85,956.20/x
  3. Step 3: Cross multiply
    272,925.80x = 409,446.30 × 85,956.20
  4. Step 4: Simplify right side
    272,925.80x = 35,194,448,052.06
  5. Step 5: Solve for x
    x = 35,194,448,052.06/272,925.80
  6. Step 6: Final answer
    x = 128,952.44

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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.