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Finding the Fourth Proportional to 558,741.80, 838,112.70 and 221,862.80

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Solution

The fourth proportional to 558,741.80, 838,112.70 and 221,862.80 is: 332,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,741.80 : 838,112.70 = 221,862.80 : x
  2. Step 2: Convert to fraction form
    558,741.80/838,112.70 = 221,862.80/x
  3. Step 3: Cross multiply
    558,741.80x = 838,112.70 × 221,862.80
  4. Step 4: Simplify right side
    558,741.80x = 185,946,030,337.56
  5. Step 5: Solve for x
    x = 185,946,030,337.56/558,741.80
  6. Step 6: Final answer
    x = 332,794.20

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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.