Home / 420,405.33-580,178.25-236,707.15

Finding the Fourth Proportional to 420,405.33, 580,178.25 and 236,707.15

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Solution

The fourth proportional to 420,405.33, 580,178.25 and 236,707.15 is: 326,666.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,405.33 : 580,178.25 = 236,707.15 : x
  2. Step 2: Convert to fraction form
    420,405.33/580,178.25 = 236,707.15/x
  3. Step 3: Cross multiply
    420,405.33x = 580,178.25 × 236,707.15
  4. Step 4: Simplify right side
    420,405.33x = 137,332,340,049.49
  5. Step 5: Solve for x
    x = 137,332,340,049.49/420,405.33
  6. Step 6: Final answer
    x = 326,666.51

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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.