Home / 281,814.12-388,919.52-167,160.78

Finding the Fourth Proportional to 281,814.12, 388,919.52 and 167,160.78

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Solution

The fourth proportional to 281,814.12, 388,919.52 and 167,160.78 is: 230,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,814.12 : 388,919.52 = 167,160.78 : x
  2. Step 2: Convert to fraction form
    281,814.12/388,919.52 = 167,160.78/x
  3. Step 3: Cross multiply
    281,814.12x = 388,919.52 × 167,160.78
  4. Step 4: Simplify right side
    281,814.12x = 65,012,090,320.43
  5. Step 5: Solve for x
    x = 65,012,090,320.43/281,814.12
  6. Step 6: Final answer
    x = 230,691.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.