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Finding the Fourth Proportional to 558,698.80, 838,048.20 and 221,819.80

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Solution

The fourth proportional to 558,698.80, 838,048.20 and 221,819.80 is: 332,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,698.80 : 838,048.20 = 221,819.80 : x
  2. Step 2: Convert to fraction form
    558,698.80/838,048.20 = 221,819.80/x
  3. Step 3: Cross multiply
    558,698.80x = 838,048.20 × 221,819.80
  4. Step 4: Simplify right side
    558,698.80x = 185,895,684,114.36
  5. Step 5: Solve for x
    x = 185,895,684,114.36/558,698.80
  6. Step 6: Final answer
    x = 332,729.70

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Similar ratio
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1.5x scale

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.