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Finding the Fourth Proportional to 323,129.11, 445,627.86 and 202,281.40

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Solution

The fourth proportional to 323,129.11, 445,627.86 and 202,281.40 is: 278,966.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,129.11 : 445,627.86 = 202,281.40 : x
  2. Step 2: Convert to fraction form
    323,129.11/445,627.86 = 202,281.40/x
  3. Step 3: Cross multiply
    323,129.11x = 445,627.86 × 202,281.40
  4. Step 4: Simplify right side
    323,129.11x = 90,142,227,399.80
  5. Step 5: Solve for x
    x = 90,142,227,399.80/323,129.11
  6. Step 6: Final answer
    x = 278,966.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.