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Finding the Fourth Proportional to 392,291.79, 588,437.69 and 111,801.75

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Solution

The fourth proportional to 392,291.79, 588,437.69 and 111,801.75 is: 167,702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,291.79 : 588,437.69 = 111,801.75 : x
  2. Step 2: Convert to fraction form
    392,291.79/588,437.69 = 111,801.75/x
  3. Step 3: Cross multiply
    392,291.79x = 588,437.69 × 111,801.75
  4. Step 4: Simplify right side
    392,291.79x = 65,788,362,948.95
  5. Step 5: Solve for x
    x = 65,788,362,948.95/392,291.79
  6. Step 6: Final answer
    x = 167,702.63

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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.