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Finding the Fourth Proportional to 285,611.13, 428,453.15 and 95,990.13

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Solution

The fourth proportional to 285,611.13, 428,453.15 and 95,990.13 is: 143,997.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,611.13 : 428,453.15 = 95,990.13 : x
  2. Step 2: Convert to fraction form
    285,611.13/428,453.15 = 95,990.13/x
  3. Step 3: Cross multiply
    285,611.13x = 428,453.15 × 95,990.13
  4. Step 4: Simplify right side
    285,611.13x = 41,127,273,087.46
  5. Step 5: Solve for x
    x = 41,127,273,087.46/285,611.13
  6. Step 6: Final answer
    x = 143,997.45

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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.