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Finding the Fourth Proportional to 215,448.80, 323,320.82 and 75,207.42

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Solution

The fourth proportional to 215,448.80, 323,320.82 and 75,207.42 is: 112,862.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,448.80 : 323,320.82 = 75,207.42 : x
  2. Step 2: Convert to fraction form
    215,448.80/323,320.82 = 75,207.42/x
  3. Step 3: Cross multiply
    215,448.80x = 323,320.82 × 75,207.42
  4. Step 4: Simplify right side
    215,448.80x = 24,316,124,328.45
  5. Step 5: Solve for x
    x = 24,316,124,328.45/215,448.80
  6. Step 6: Final answer
    x = 112,862.66

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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.