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Finding the Fourth Proportional to 558,696.80, 838,045.20 and 221,817.80

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Solution

The fourth proportional to 558,696.80, 838,045.20 and 221,817.80 is: 332,726.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,696.80 : 838,045.20 = 221,817.80 : x
  2. Step 2: Convert to fraction form
    558,696.80/838,045.20 = 221,817.80/x
  3. Step 3: Cross multiply
    558,696.80x = 838,045.20 × 221,817.80
  4. Step 4: Simplify right side
    558,696.80x = 185,893,342,564.56
  5. Step 5: Solve for x
    x = 185,893,342,564.56/558,696.80
  6. Step 6: Final answer
    x = 332,726.70

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Double scale
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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.