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Finding the Fourth Proportional to 239,410, 359,115 and 91,666

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Solution

The fourth proportional to 239,410, 359,115 and 91,666 is: 137,499

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,410 : 359,115 = 91,666 : x
  2. Step 2: Convert to fraction form
    239,410/359,115 = 91,666/x
  3. Step 3: Cross multiply
    239,410x = 359,115 × 91,666
  4. Step 4: Simplify right side
    239,410x = 32,918,635,590
  5. Step 5: Solve for x
    x = 32,918,635,590/239,410
  6. Step 6: Final answer
    x = 137,499

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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.