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Finding the Fourth Proportional to 308,753.46, 463,065.40 and 87,085.62

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Solution

The fourth proportional to 308,753.46, 463,065.40 and 87,085.62 is: 130,610.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,753.46 : 463,065.40 = 87,085.62 : x
  2. Step 2: Convert to fraction form
    308,753.46/463,065.40 = 87,085.62/x
  3. Step 3: Cross multiply
    308,753.46x = 463,065.40 × 87,085.62
  4. Step 4: Simplify right side
    308,753.46x = 40,326,337,459.55
  5. Step 5: Solve for x
    x = 40,326,337,459.55/308,753.46
  6. Step 6: Final answer
    x = 130,610.16

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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.