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Finding the Fourth Proportional to 486,093.20, 729,139.80 and 297,136.40

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Solution

The fourth proportional to 486,093.20, 729,139.80 and 297,136.40 is: 445,704.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,093.20 : 729,139.80 = 297,136.40 : x
  2. Step 2: Convert to fraction form
    486,093.20/729,139.80 = 297,136.40/x
  3. Step 3: Cross multiply
    486,093.20x = 729,139.80 × 297,136.40
  4. Step 4: Simplify right side
    486,093.20x = 216,653,975,268.72
  5. Step 5: Solve for x
    x = 216,653,975,268.72/486,093.20
  6. Step 6: Final answer
    x = 445,704.60

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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.