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Finding the Fourth Proportional to 287,898.56, 431,832.28 and 88,219.52

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Solution

The fourth proportional to 287,898.56, 431,832.28 and 88,219.52 is: 132,324.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,898.56 : 431,832.28 = 88,219.52 : x
  2. Step 2: Convert to fraction form
    287,898.56/431,832.28 = 88,219.52/x
  3. Step 3: Cross multiply
    287,898.56x = 431,832.28 × 88,219.52
  4. Step 4: Simplify right side
    287,898.56x = 38,096,036,462.11
  5. Step 5: Solve for x
    x = 38,096,036,462.11/287,898.56
  6. Step 6: Final answer
    x = 132,324.51

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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.