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Finding the Fourth Proportional to 215,398.55, 323,245.44 and 75,157.17

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Solution

The fourth proportional to 215,398.55, 323,245.44 and 75,157.17 is: 112,787.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,398.55 : 323,245.44 = 75,157.17 : x
  2. Step 2: Convert to fraction form
    215,398.55/323,245.44 = 75,157.17/x
  3. Step 3: Cross multiply
    215,398.55x = 323,245.44 × 75,157.17
  4. Step 4: Simplify right side
    215,398.55x = 24,294,212,485.80
  5. Step 5: Solve for x
    x = 24,294,212,485.80/215,398.55
  6. Step 6: Final answer
    x = 112,787.26

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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.