Home / 318,934.20-478,401.30-231,016.80

Finding the Fourth Proportional to 318,934.20, 478,401.30 and 231,016.80

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Solution

The fourth proportional to 318,934.20, 478,401.30 and 231,016.80 is: 346,525.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,934.20 : 478,401.30 = 231,016.80 : x
  2. Step 2: Convert to fraction form
    318,934.20/478,401.30 = 231,016.80/x
  3. Step 3: Cross multiply
    318,934.20x = 478,401.30 × 231,016.80
  4. Step 4: Simplify right side
    318,934.20x = 110,518,737,441.84
  5. Step 5: Solve for x
    x = 110,518,737,441.84/318,934.20
  6. Step 6: Final answer
    x = 346,525.20

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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.