Home / 212,401.20-318,616.20-72,170.40

Finding the Fourth Proportional to 212,401.20, 318,616.20 and 72,170.40

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Solution

The fourth proportional to 212,401.20, 318,616.20 and 72,170.40 is: 108,260.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,401.20 : 318,616.20 = 72,170.40 : x
  2. Step 2: Convert to fraction form
    212,401.20/318,616.20 = 72,170.40/x
  3. Step 3: Cross multiply
    212,401.20x = 318,616.20 × 72,170.40
  4. Step 4: Simplify right side
    212,401.20x = 22,994,658,600.48
  5. Step 5: Solve for x
    x = 22,994,658,600.48/212,401.20
  6. Step 6: Final answer
    x = 108,260.49

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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.