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Finding the Fourth Proportional to 614,385.12, 921,439.44 and 220,401.12

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Solution

The fourth proportional to 614,385.12, 921,439.44 and 220,401.12 is: 330,552.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,385.12 : 921,439.44 = 220,401.12 : x
  2. Step 2: Convert to fraction form
    614,385.12/921,439.44 = 220,401.12/x
  3. Step 3: Cross multiply
    614,385.12x = 921,439.44 × 220,401.12
  4. Step 4: Simplify right side
    614,385.12x = 203,086,284,588.17
  5. Step 5: Solve for x
    x = 203,086,284,588.17/614,385.12
  6. Step 6: Final answer
    x = 330,552.09

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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.