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Finding the Fourth Proportional to 231,658.40, 347,712.30 and 111,799.72

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Solution

The fourth proportional to 231,658.40, 347,712.30 and 111,799.72 is: 167,808.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,658.40 : 347,712.30 = 111,799.72 : x
  2. Step 2: Convert to fraction form
    231,658.40/347,712.30 = 111,799.72/x
  3. Step 3: Cross multiply
    231,658.40x = 347,712.30 × 111,799.72
  4. Step 4: Simplify right side
    231,658.40x = 38,874,137,780.56
  5. Step 5: Solve for x
    x = 38,874,137,780.56/231,658.40
  6. Step 6: Final answer
    x = 167,808.02

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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.