Home / 309,986,528.76-464,979,793.83-128,233,706.76

Finding the Fourth Proportional to 309,986,528.76, 464,979,793.83 and 128,233,706.76

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Solution

The fourth proportional to 309,986,528.76, 464,979,793.83 and 128,233,706.76 is: 192,350,560.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,986,528.76 : 464,979,793.83 = 128,233,706.76 : x
  2. Step 2: Convert to fraction form
    309,986,528.76/464,979,793.83 = 128,233,706.76/x
  3. Step 3: Cross multiply
    309,986,528.76x = 464,979,793.83 × 128,233,706.76
  4. Step 4: Simplify right side
    309,986,528.76x = 59,626,082,531,321,480
  5. Step 5: Solve for x
    x = 59,626,082,531,321,480/309,986,528.76
  6. Step 6: Final answer
    x = 192,350,560.43

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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.