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Finding the Fourth Proportional to 239,764, 359,663.28 and 92,020

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Solution

The fourth proportional to 239,764, 359,663.28 and 92,020 is: 138,036.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,764 : 359,663.28 = 92,020 : x
  2. Step 2: Convert to fraction form
    239,764/359,663.28 = 92,020/x
  3. Step 3: Cross multiply
    239,764x = 359,663.28 × 92,020
  4. Step 4: Simplify right side
    239,764x = 33,096,215,025.60
  5. Step 5: Solve for x
    x = 33,096,215,025.60/239,764
  6. Step 6: Final answer
    x = 138,036.63

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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.