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Finding the Fourth Proportional to 239,584, 359,393.28 and 91,840

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Solution

The fourth proportional to 239,584, 359,393.28 and 91,840 is: 137,766.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,584 : 359,393.28 = 91,840 : x
  2. Step 2: Convert to fraction form
    239,584/359,393.28 = 91,840/x
  3. Step 3: Cross multiply
    239,584x = 359,393.28 × 91,840
  4. Step 4: Simplify right side
    239,584x = 33,006,678,835.20
  5. Step 5: Solve for x
    x = 33,006,678,835.20/239,584
  6. Step 6: Final answer
    x = 137,766.62

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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.