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Finding the Fourth Proportional to 392,920.22, 589,363.90 and 112,437.47

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Solution

The fourth proportional to 392,920.22, 589,363.90 and 112,437.47 is: 168,651.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,920.22 : 589,363.90 = 112,437.47 : x
  2. Step 2: Convert to fraction form
    392,920.22/589,363.90 = 112,437.47/x
  3. Step 3: Cross multiply
    392,920.22x = 589,363.90 × 112,437.47
  4. Step 4: Simplify right side
    392,920.22x = 66,266,583,702.48
  5. Step 5: Solve for x
    x = 66,266,583,702.48/392,920.22
  6. Step 6: Final answer
    x = 168,651.50

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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.