Home / 438,835.80-658,253.70-123,346.20

Finding the Fourth Proportional to 438,835.80, 658,253.70 and 123,346.20

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Solution

The fourth proportional to 438,835.80, 658,253.70 and 123,346.20 is: 185,019.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,835.80 : 658,253.70 = 123,346.20 : x
  2. Step 2: Convert to fraction form
    438,835.80/658,253.70 = 123,346.20/x
  3. Step 3: Cross multiply
    438,835.80x = 658,253.70 × 123,346.20
  4. Step 4: Simplify right side
    438,835.80x = 81,193,092,530.94
  5. Step 5: Solve for x
    x = 81,193,092,530.94/438,835.80
  6. Step 6: Final answer
    x = 185,019.30

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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.