Home / 268,240.10-402,360.15-81,251.60

Finding the Fourth Proportional to 268,240.10, 402,360.15 and 81,251.60

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Solution

The fourth proportional to 268,240.10, 402,360.15 and 81,251.60 is: 121,877.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,240.10 : 402,360.15 = 81,251.60 : x
  2. Step 2: Convert to fraction form
    268,240.10/402,360.15 = 81,251.60/x
  3. Step 3: Cross multiply
    268,240.10x = 402,360.15 × 81,251.60
  4. Step 4: Simplify right side
    268,240.10x = 32,692,405,963.74
  5. Step 5: Solve for x
    x = 32,692,405,963.74/268,240.10
  6. Step 6: Final answer
    x = 121,877.40

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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.