Home / 318,622.10-477,933.15-312,401.30

Finding the Fourth Proportional to 318,622.10, 477,933.15 and 312,401.30

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Solution

The fourth proportional to 318,622.10, 477,933.15 and 312,401.30 is: 468,601.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,622.10 : 477,933.15 = 312,401.30 : x
  2. Step 2: Convert to fraction form
    318,622.10/477,933.15 = 312,401.30/x
  3. Step 3: Cross multiply
    318,622.10x = 477,933.15 × 312,401.30
  4. Step 4: Simplify right side
    318,622.10x = 149,306,937,373.10
  5. Step 5: Solve for x
    x = 149,306,937,373.10/318,622.10
  6. Step 6: Final answer
    x = 468,601.95

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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.