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Finding the Fourth Proportional to 486,307.20, 729,115.20 and 220,195.20

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Solution

The fourth proportional to 486,307.20, 729,115.20 and 220,195.20 is: 330,136.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,307.20 : 729,115.20 = 220,195.20 : x
  2. Step 2: Convert to fraction form
    486,307.20/729,115.20 = 220,195.20/x
  3. Step 3: Cross multiply
    486,307.20x = 729,115.20 × 220,195.20
  4. Step 4: Simplify right side
    486,307.20x = 160,547,667,287.04
  5. Step 5: Solve for x
    x = 160,547,667,287.04/486,307.20
  6. Step 6: Final answer
    x = 330,136.32

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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.