Home / 558,910.80-838,301.40-159,613.20

Finding the Fourth Proportional to 558,910.80, 838,301.40 and 159,613.20

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Solution

The fourth proportional to 558,910.80, 838,301.40 and 159,613.20 is: 239,401.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,910.80 : 838,301.40 = 159,613.20 : x
  2. Step 2: Convert to fraction form
    558,910.80/838,301.40 = 159,613.20/x
  3. Step 3: Cross multiply
    558,910.80x = 838,301.40 × 159,613.20
  4. Step 4: Simplify right side
    558,910.80x = 133,803,969,018.48
  5. Step 5: Solve for x
    x = 133,803,969,018.48/558,910.80
  6. Step 6: Final answer
    x = 239,401.29

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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.