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Finding the Fourth Proportional to 389,641.95, 584,458.88 and 123,402.44

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Solution

The fourth proportional to 389,641.95, 584,458.88 and 123,402.44 is: 185,102.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,641.95 : 584,458.88 = 123,402.44 : x
  2. Step 2: Convert to fraction form
    389,641.95/584,458.88 = 123,402.44/x
  3. Step 3: Cross multiply
    389,641.95x = 584,458.88 × 123,402.44
  4. Step 4: Simplify right side
    389,641.95x = 72,123,650,122.36
  5. Step 5: Solve for x
    x = 72,123,650,122.36/389,641.95
  6. Step 6: Final answer
    x = 185,102.37

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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.