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Finding the Fourth Proportional to 325,812.70, 488,719.05 and 247,080.70

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Solution

The fourth proportional to 325,812.70, 488,719.05 and 247,080.70 is: 370,621.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,812.70 : 488,719.05 = 247,080.70 : x
  2. Step 2: Convert to fraction form
    325,812.70/488,719.05 = 247,080.70/x
  3. Step 3: Cross multiply
    325,812.70x = 488,719.05 × 247,080.70
  4. Step 4: Simplify right side
    325,812.70x = 120,753,044,977.34
  5. Step 5: Solve for x
    x = 120,753,044,977.34/325,812.70
  6. Step 6: Final answer
    x = 370,621.05

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Similar ratio
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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.