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Finding the Fourth Proportional to 259,587.20, 389,092.80 and 101,763.20

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Solution

The fourth proportional to 259,587.20, 389,092.80 and 101,763.20 is: 152,531.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,587.20 : 389,092.80 = 101,763.20 : x
  2. Step 2: Convert to fraction form
    259,587.20/389,092.80 = 101,763.20/x
  3. Step 3: Cross multiply
    259,587.20x = 389,092.80 × 101,763.20
  4. Step 4: Simplify right side
    259,587.20x = 39,595,328,424.96
  5. Step 5: Solve for x
    x = 39,595,328,424.96/259,587.20
  6. Step 6: Final answer
    x = 152,531.90

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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.