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Finding the Fourth Proportional to 259,937.10, 389,905.65 and 147,573.90

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Solution

The fourth proportional to 259,937.10, 389,905.65 and 147,573.90 is: 221,360.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,937.10 : 389,905.65 = 147,573.90 : x
  2. Step 2: Convert to fraction form
    259,937.10/389,905.65 = 147,573.90/x
  3. Step 3: Cross multiply
    259,937.10x = 389,905.65 × 147,573.90
  4. Step 4: Simplify right side
    259,937.10x = 57,539,897,402.54
  5. Step 5: Solve for x
    x = 57,539,897,402.54/259,937.10
  6. Step 6: Final answer
    x = 221,360.85

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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.