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Finding the Fourth Proportional to 206,679.40, 310,047.90 and 88,349.80

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Solution

The fourth proportional to 206,679.40, 310,047.90 and 88,349.80 is: 132,537.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,679.40 : 310,047.90 = 88,349.80 : x
  2. Step 2: Convert to fraction form
    206,679.40/310,047.90 = 88,349.80/x
  3. Step 3: Cross multiply
    206,679.40x = 310,047.90 × 88,349.80
  4. Step 4: Simplify right side
    206,679.40x = 27,392,669,955.42
  5. Step 5: Solve for x
    x = 27,392,669,955.42/206,679.40
  6. Step 6: Final answer
    x = 132,537.01

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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.