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Finding the Fourth Proportional to 215,850.16, 323,697.48 and 91,200.88

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Solution

The fourth proportional to 215,850.16, 323,697.48 and 91,200.88 is: 136,768.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,850.16 : 323,697.48 = 91,200.88 : x
  2. Step 2: Convert to fraction form
    215,850.16/323,697.48 = 91,200.88/x
  3. Step 3: Cross multiply
    215,850.16x = 323,697.48 × 91,200.88
  4. Step 4: Simplify right side
    215,850.16x = 29,521,495,029.78
  5. Step 5: Solve for x
    x = 29,521,495,029.78/215,850.16
  6. Step 6: Final answer
    x = 136,768.46

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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.