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Finding the Fourth Proportional to 285,497.20, 428,245.80 and 268,001.20

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Solution

The fourth proportional to 285,497.20, 428,245.80 and 268,001.20 is: 402,001.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,497.20 : 428,245.80 = 268,001.20 : x
  2. Step 2: Convert to fraction form
    285,497.20/428,245.80 = 268,001.20/x
  3. Step 3: Cross multiply
    285,497.20x = 428,245.80 × 268,001.20
  4. Step 4: Simplify right side
    285,497.20x = 114,770,388,294.96
  5. Step 5: Solve for x
    x = 114,770,388,294.96/285,497.20
  6. Step 6: Final answer
    x = 402,001.80

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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.