Home / 318,820.38-478,293.63-91,118.04

Finding the Fourth Proportional to 318,820.38, 478,293.63 and 91,118.04

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Solution

The fourth proportional to 318,820.38, 478,293.63 and 91,118.04 is: 136,695.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,820.38 : 478,293.63 = 91,118.04 : x
  2. Step 2: Convert to fraction form
    318,820.38/478,293.63 = 91,118.04/x
  3. Step 3: Cross multiply
    318,820.38x = 478,293.63 × 91,118.04
  4. Step 4: Simplify right side
    318,820.38x = 43,581,175,718.62
  5. Step 5: Solve for x
    x = 43,581,175,718.62/318,820.38
  6. Step 6: Final answer
    x = 136,695.08

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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.