Home / 212,865.30-318,909.15-173,207.70

Finding the Fourth Proportional to 212,865.30, 318,909.15 and 173,207.70

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Solution

The fourth proportional to 212,865.30, 318,909.15 and 173,207.70 is: 259,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,865.30 : 318,909.15 = 173,207.70 : x
  2. Step 2: Convert to fraction form
    212,865.30/318,909.15 = 173,207.70/x
  3. Step 3: Cross multiply
    212,865.30x = 318,909.15 × 173,207.70
  4. Step 4: Simplify right side
    212,865.30x = 55,237,520,380.46
  5. Step 5: Solve for x
    x = 55,237,520,380.46/212,865.30
  6. Step 6: Final answer
    x = 259,495.18

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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.