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Finding the Fourth Proportional to 480,876.60, 721,574.10 and 200,422.20

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Solution

The fourth proportional to 480,876.60, 721,574.10 and 200,422.20 is: 300,741.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,876.60 : 721,574.10 = 200,422.20 : x
  2. Step 2: Convert to fraction form
    480,876.60/721,574.10 = 200,422.20/x
  3. Step 3: Cross multiply
    480,876.60x = 721,574.10 × 200,422.20
  4. Step 4: Simplify right side
    480,876.60x = 144,619,468,585.02
  5. Step 5: Solve for x
    x = 144,619,468,585.02/480,876.60
  6. Step 6: Final answer
    x = 300,741.33

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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.