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Finding the Fourth Proportional to 215,714.27, 323,571.39 and 65,954.55

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Solution

The fourth proportional to 215,714.27, 323,571.39 and 65,954.55 is: 98,931.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,714.27 : 323,571.39 = 65,954.55 : x
  2. Step 2: Convert to fraction form
    215,714.27/323,571.39 = 65,954.55/x
  3. Step 3: Cross multiply
    215,714.27x = 323,571.39 × 65,954.55
  4. Step 4: Simplify right side
    215,714.27x = 21,341,005,420.32
  5. Step 5: Solve for x
    x = 21,341,005,420.32/215,714.27
  6. Step 6: Final answer
    x = 98,931.82

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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.