Home / 397,642.22-548,565.45-236,405.78

Finding the Fourth Proportional to 397,642.22, 548,565.45 and 236,405.78

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Solution

The fourth proportional to 397,642.22, 548,565.45 and 236,405.78 is: 326,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,642.22 : 548,565.45 = 236,405.78 : x
  2. Step 2: Convert to fraction form
    397,642.22/548,565.45 = 236,405.78/x
  3. Step 3: Cross multiply
    397,642.22x = 548,565.45 × 236,405.78
  4. Step 4: Simplify right side
    397,642.22x = 129,684,043,088.30
  5. Step 5: Solve for x
    x = 129,684,043,088.30/397,642.22
  6. Step 6: Final answer
    x = 326,132.48

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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.