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Finding the Fourth Proportional to 214,244.40, 321,712.20 and 161,713.20

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Solution

The fourth proportional to 214,244.40, 321,712.20 and 161,713.20 is: 242,830.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,244.40 : 321,712.20 = 161,713.20 : x
  2. Step 2: Convert to fraction form
    214,244.40/321,712.20 = 161,713.20/x
  3. Step 3: Cross multiply
    214,244.40x = 321,712.20 × 161,713.20
  4. Step 4: Simplify right side
    214,244.40x = 52,025,109,341.04
  5. Step 5: Solve for x
    x = 52,025,109,341.04/214,244.40
  6. Step 6: Final answer
    x = 242,830.66

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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.