Home / 215,818.90-323,728.35-131,838.10

Finding the Fourth Proportional to 215,818.90, 323,728.35 and 131,838.10

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Solution

The fourth proportional to 215,818.90, 323,728.35 and 131,838.10 is: 197,757.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,818.90 : 323,728.35 = 131,838.10 : x
  2. Step 2: Convert to fraction form
    215,818.90/323,728.35 = 131,838.10/x
  3. Step 3: Cross multiply
    215,818.90x = 323,728.35 × 131,838.10
  4. Step 4: Simplify right side
    215,818.90x = 42,679,730,580.14
  5. Step 5: Solve for x
    x = 42,679,730,580.14/215,818.90
  6. Step 6: Final answer
    x = 197,757.15

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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.