Home / 208,863.22-288,381.03-128,398.62

Finding the Fourth Proportional to 208,863.22, 288,381.03 and 128,398.62

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Solution

The fourth proportional to 208,863.22, 288,381.03 and 128,398.62 is: 177,282.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,863.22 : 288,381.03 = 128,398.62 : x
  2. Step 2: Convert to fraction form
    208,863.22/288,381.03 = 128,398.62/x
  3. Step 3: Cross multiply
    208,863.22x = 288,381.03 × 128,398.62
  4. Step 4: Simplify right side
    208,863.22x = 37,027,726,286.18
  5. Step 5: Solve for x
    x = 37,027,726,286.18/208,863.22
  6. Step 6: Final answer
    x = 177,282.18

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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.