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Finding the Fourth Proportional to 215,518.70, 323,278.05 and 75,259.10

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Solution

The fourth proportional to 215,518.70, 323,278.05 and 75,259.10 is: 112,888.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,518.70 : 323,278.05 = 75,259.10 : x
  2. Step 2: Convert to fraction form
    215,518.70/323,278.05 = 75,259.10/x
  3. Step 3: Cross multiply
    215,518.70x = 323,278.05 × 75,259.10
  4. Step 4: Simplify right side
    215,518.70x = 24,329,615,092.76
  5. Step 5: Solve for x
    x = 24,329,615,092.76/215,518.70
  6. Step 6: Final answer
    x = 112,888.65

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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.