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Finding the Fourth Proportional to 351,873.72, 527,808.96 and 85,633.20

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Solution

The fourth proportional to 351,873.72, 527,808.96 and 85,633.20 is: 128,449.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,873.72 : 527,808.96 = 85,633.20 : x
  2. Step 2: Convert to fraction form
    351,873.72/527,808.96 = 85,633.20/x
  3. Step 3: Cross multiply
    351,873.72x = 527,808.96 × 85,633.20
  4. Step 4: Simplify right side
    351,873.72x = 45,197,970,233.47
  5. Step 5: Solve for x
    x = 45,197,970,233.47/351,873.72
  6. Step 6: Final answer
    x = 128,449.41

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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.