Home / 268,531.20-402,540.80-100,006.40

Finding the Fourth Proportional to 268,531.20, 402,540.80 and 100,006.40

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Solution

The fourth proportional to 268,531.20, 402,540.80 and 100,006.40 is: 149,914.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,531.20 : 402,540.80 = 100,006.40 : x
  2. Step 2: Convert to fraction form
    268,531.20/402,540.80 = 100,006.40/x
  3. Step 3: Cross multiply
    268,531.20x = 402,540.80 × 100,006.40
  4. Step 4: Simplify right side
    268,531.20x = 40,256,656,261.12
  5. Step 5: Solve for x
    x = 40,256,656,261.12/268,531.20
  6. Step 6: Final answer
    x = 149,914.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.