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Finding the Fourth Proportional to 285,359.49, 428,057.67 and 95,812.20

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Solution

The fourth proportional to 285,359.49, 428,057.67 and 95,812.20 is: 143,724.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,359.49 : 428,057.67 = 95,812.20 : x
  2. Step 2: Convert to fraction form
    285,359.49/428,057.67 = 95,812.20/x
  3. Step 3: Cross multiply
    285,359.49x = 428,057.67 × 95,812.20
  4. Step 4: Simplify right side
    285,359.49x = 41,013,147,089.57
  5. Step 5: Solve for x
    x = 41,013,147,089.57/285,359.49
  6. Step 6: Final answer
    x = 143,724.49

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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.