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Finding the Fourth Proportional to 486,180.90, 729,266.55 and 153,756.90

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Solution

The fourth proportional to 486,180.90, 729,266.55 and 153,756.90 is: 230,633.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,180.90 : 729,266.55 = 153,756.90 : x
  2. Step 2: Convert to fraction form
    486,180.90/729,266.55 = 153,756.90/x
  3. Step 3: Cross multiply
    486,180.90x = 729,266.55 × 153,756.90
  4. Step 4: Simplify right side
    486,180.90x = 112,129,764,001.70
  5. Step 5: Solve for x
    x = 112,129,764,001.70/486,180.90
  6. Step 6: Final answer
    x = 230,633.83

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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.