Home / 306,350.10-422,294.58-215,458.38

Finding the Fourth Proportional to 306,350.10, 422,294.58 and 215,458.38

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Solution

The fourth proportional to 306,350.10, 422,294.58 and 215,458.38 is: 297,003.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,350.10 : 422,294.58 = 215,458.38 : x
  2. Step 2: Convert to fraction form
    306,350.10/422,294.58 = 215,458.38/x
  3. Step 3: Cross multiply
    306,350.10x = 422,294.58 × 215,458.38
  4. Step 4: Simplify right side
    306,350.10x = 90,986,906,089.58
  5. Step 5: Solve for x
    x = 90,986,906,089.58/306,350.10
  6. Step 6: Final answer
    x = 297,003.02

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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.