Home / 309,986,515.27-464,979,773.58-128,233,693.27

Finding the Fourth Proportional to 309,986,515.27, 464,979,773.58 and 128,233,693.27

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Solution

The fourth proportional to 309,986,515.27, 464,979,773.58 and 128,233,693.27 is: 192,350,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,986,515.27 : 464,979,773.58 = 128,233,693.27 : x
  2. Step 2: Convert to fraction form
    309,986,515.27/464,979,773.58 = 128,233,693.27/x
  3. Step 3: Cross multiply
    309,986,515.27x = 464,979,773.58 × 128,233,693.27
  4. Step 4: Simplify right side
    309,986,515.27x = 59,626,073,660,214,952
  5. Step 5: Solve for x
    x = 59,626,073,660,214,952/309,986,515.27
  6. Step 6: Final answer
    x = 192,350,540.18

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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.