Home / 318,862.08-478,273.68-131,868.72

Finding the Fourth Proportional to 318,862.08, 478,273.68 and 131,868.72

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Solution

The fourth proportional to 318,862.08, 478,273.68 and 131,868.72 is: 197,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,862.08 : 478,273.68 = 131,868.72 : x
  2. Step 2: Convert to fraction form
    318,862.08/478,273.68 = 131,868.72/x
  3. Step 3: Cross multiply
    318,862.08x = 478,273.68 × 131,868.72
  4. Step 4: Simplify right side
    318,862.08x = 63,069,337,991.29
  5. Step 5: Solve for x
    x = 63,069,337,991.29/318,862.08
  6. Step 6: Final answer
    x = 197,795.04

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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.