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Finding the Fourth Proportional to 285,960.13, 428,940.21 and 75,598.09

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Solution

The fourth proportional to 285,960.13, 428,940.21 and 75,598.09 is: 113,397.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,960.13 : 428,940.21 = 75,598.09 : x
  2. Step 2: Convert to fraction form
    285,960.13/428,940.21 = 75,598.09/x
  3. Step 3: Cross multiply
    285,960.13x = 428,940.21 × 75,598.09
  4. Step 4: Simplify right side
    285,960.13x = 32,427,060,600.20
  5. Step 5: Solve for x
    x = 32,427,060,600.20/285,960.13
  6. Step 6: Final answer
    x = 113,397.14

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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.