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Finding the Fourth Proportional to 285,616.60, 428,424.90 and 239,997.40

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Solution

The fourth proportional to 285,616.60, 428,424.90 and 239,997.40 is: 359,996.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,616.60 : 428,424.90 = 239,997.40 : x
  2. Step 2: Convert to fraction form
    285,616.60/428,424.90 = 239,997.40/x
  3. Step 3: Cross multiply
    285,616.60x = 428,424.90 × 239,997.40
  4. Step 4: Simplify right side
    285,616.60x = 102,820,862,095.26
  5. Step 5: Solve for x
    x = 102,820,862,095.26/285,616.60
  6. Step 6: Final answer
    x = 359,996.10

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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.