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Finding the Fourth Proportional to 558,343.80, 837,515.70 and 221,464.80

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Solution

The fourth proportional to 558,343.80, 837,515.70 and 221,464.80 is: 332,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,343.80 : 837,515.70 = 221,464.80 : x
  2. Step 2: Convert to fraction form
    558,343.80/837,515.70 = 221,464.80/x
  3. Step 3: Cross multiply
    558,343.80x = 837,515.70 × 221,464.80
  4. Step 4: Simplify right side
    558,343.80x = 185,480,246,997.36
  5. Step 5: Solve for x
    x = 185,480,246,997.36/558,343.80
  6. Step 6: Final answer
    x = 332,197.20

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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.