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Finding the Fourth Proportional to 558,728.20, 838,124.70 and 159,398.20

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Solution

The fourth proportional to 558,728.20, 838,124.70 and 159,398.20 is: 239,106.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,728.20 : 838,124.70 = 159,398.20 : x
  2. Step 2: Convert to fraction form
    558,728.20/838,124.70 = 159,398.20/x
  3. Step 3: Cross multiply
    558,728.20x = 838,124.70 × 159,398.20
  4. Step 4: Simplify right side
    558,728.20x = 133,595,568,555.54
  5. Step 5: Solve for x
    x = 133,595,568,555.54/558,728.20
  6. Step 6: Final answer
    x = 239,106.54

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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.