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Finding the Fourth Proportional to 486,499.80, 729,749.70 and 220,254.36

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Solution

The fourth proportional to 486,499.80, 729,749.70 and 220,254.36 is: 330,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,499.80 : 729,749.70 = 220,254.36 : x
  2. Step 2: Convert to fraction form
    486,499.80/729,749.70 = 220,254.36/x
  3. Step 3: Cross multiply
    486,499.80x = 729,749.70 × 220,254.36
  4. Step 4: Simplify right side
    486,499.80x = 160,730,553,133.69
  5. Step 5: Solve for x
    x = 160,730,553,133.69/486,499.80
  6. Step 6: Final answer
    x = 330,381.54

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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.