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Finding the Fourth Proportional to 239,521.28, 359,359.68 and 114,872

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Solution

The fourth proportional to 239,521.28, 359,359.68 and 114,872 is: 172,345.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,521.28 : 359,359.68 = 114,872 : x
  2. Step 2: Convert to fraction form
    239,521.28/359,359.68 = 114,872/x
  3. Step 3: Cross multiply
    239,521.28x = 359,359.68 × 114,872
  4. Step 4: Simplify right side
    239,521.28x = 41,280,365,160.96
  5. Step 5: Solve for x
    x = 41,280,365,160.96/239,521.28
  6. Step 6: Final answer
    x = 172,345.29

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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.