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Finding the Fourth Proportional to 392,051.88, 588,007.50 and 103,865.46

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Solution

The fourth proportional to 392,051.88, 588,007.50 and 103,865.46 is: 155,779.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,051.88 : 588,007.50 = 103,865.46 : x
  2. Step 2: Convert to fraction form
    392,051.88/588,007.50 = 103,865.46/x
  3. Step 3: Cross multiply
    392,051.88x = 588,007.50 × 103,865.46
  4. Step 4: Simplify right side
    392,051.88x = 61,073,669,470.95
  5. Step 5: Solve for x
    x = 61,073,669,470.95/392,051.88
  6. Step 6: Final answer
    x = 155,779.56

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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.