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Finding the Fourth Proportional to 485,349.60, 727,765.20 and 204,549.60

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Solution

The fourth proportional to 485,349.60, 727,765.20 and 204,549.60 is: 306,715.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,349.60 : 727,765.20 = 204,549.60 : x
  2. Step 2: Convert to fraction form
    485,349.60/727,765.20 = 204,549.60/x
  3. Step 3: Cross multiply
    485,349.60x = 727,765.20 × 204,549.60
  4. Step 4: Simplify right side
    485,349.60x = 148,864,080,553.92
  5. Step 5: Solve for x
    x = 148,864,080,553.92/485,349.60
  6. Step 6: Final answer
    x = 306,715.16

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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.