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Finding the Fourth Proportional to 215,532.60, 323,298.90 and 82,417.20

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Solution

The fourth proportional to 215,532.60, 323,298.90 and 82,417.20 is: 123,625.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,532.60 : 323,298.90 = 82,417.20 : x
  2. Step 2: Convert to fraction form
    215,532.60/323,298.90 = 82,417.20/x
  3. Step 3: Cross multiply
    215,532.60x = 323,298.90 × 82,417.20
  4. Step 4: Simplify right side
    215,532.60x = 26,645,390,101.08
  5. Step 5: Solve for x
    x = 26,645,390,101.08/215,532.60
  6. Step 6: Final answer
    x = 123,625.80

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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.