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Finding the Fourth Proportional to 252,188.16, 378,341.12 and 85,976.32

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Solution

The fourth proportional to 252,188.16, 378,341.12 and 85,976.32 is: 128,984.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,188.16 : 378,341.12 = 85,976.32 : x
  2. Step 2: Convert to fraction form
    252,188.16/378,341.12 = 85,976.32/x
  3. Step 3: Cross multiply
    252,188.16x = 378,341.12 × 85,976.32
  4. Step 4: Simplify right side
    252,188.16x = 32,528,377,202.28
  5. Step 5: Solve for x
    x = 32,528,377,202.28/252,188.16
  6. Step 6: Final answer
    x = 128,984.55

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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.