Home / 309,189.12-426,715.38-173,245.20

Finding the Fourth Proportional to 309,189.12, 426,715.38 and 173,245.20

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Solution

The fourth proportional to 309,189.12, 426,715.38 and 173,245.20 is: 239,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,189.12 : 426,715.38 = 173,245.20 : x
  2. Step 2: Convert to fraction form
    309,189.12/426,715.38 = 173,245.20/x
  3. Step 3: Cross multiply
    309,189.12x = 426,715.38 × 173,245.20
  4. Step 4: Simplify right side
    309,189.12x = 73,926,391,351.18
  5. Step 5: Solve for x
    x = 73,926,391,351.18/309,189.12
  6. Step 6: Final answer
    x = 239,097.65

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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.