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Finding the Fourth Proportional to 239,267.31, 358,956.77 and 79,331.54

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Solution

The fourth proportional to 239,267.31, 358,956.77 and 79,331.54 is: 119,015.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,267.31 : 358,956.77 = 79,331.54 : x
  2. Step 2: Convert to fraction form
    239,267.31/358,956.77 = 79,331.54/x
  3. Step 3: Cross multiply
    239,267.31x = 358,956.77 × 79,331.54
  4. Step 4: Simplify right side
    239,267.31x = 28,476,593,631.46
  5. Step 5: Solve for x
    x = 28,476,593,631.46/239,267.31
  6. Step 6: Final answer
    x = 119,015.82

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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.