Home / 212,436.17-318,654.26-79,326.82

Finding the Fourth Proportional to 212,436.17, 318,654.26 and 79,326.82

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Solution

The fourth proportional to 212,436.17, 318,654.26 and 79,326.82 is: 118,990.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,436.17 : 318,654.26 = 79,326.82 : x
  2. Step 2: Convert to fraction form
    212,436.17/318,654.26 = 79,326.82/x
  3. Step 3: Cross multiply
    212,436.17x = 318,654.26 × 79,326.82
  4. Step 4: Simplify right side
    212,436.17x = 25,277,827,135.35
  5. Step 5: Solve for x
    x = 25,277,827,135.35/212,436.17
  6. Step 6: Final answer
    x = 118,990.23

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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.