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Finding the Fourth Proportional to 390,760.52, 586,134.58 and 124,517.22

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Solution

The fourth proportional to 390,760.52, 586,134.58 and 124,517.22 is: 186,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,760.52 : 586,134.58 = 124,517.22 : x
  2. Step 2: Convert to fraction form
    390,760.52/586,134.58 = 124,517.22/x
  3. Step 3: Cross multiply
    390,760.52x = 586,134.58 × 124,517.22
  4. Step 4: Simplify right side
    390,760.52x = 72,983,848,447.47
  5. Step 5: Solve for x
    x = 72,983,848,447.47/390,760.52
  6. Step 6: Final answer
    x = 186,773.85

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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.