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Finding the Fourth Proportional to 268,787.55, 402,900.09 and 100,240.12

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Solution

The fourth proportional to 268,787.55, 402,900.09 and 100,240.12 is: 150,255.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,787.55 : 402,900.09 = 100,240.12 : x
  2. Step 2: Convert to fraction form
    268,787.55/402,900.09 = 100,240.12/x
  3. Step 3: Cross multiply
    268,787.55x = 402,900.09 × 100,240.12
  4. Step 4: Simplify right side
    268,787.55x = 40,386,753,369.61
  5. Step 5: Solve for x
    x = 40,386,753,369.61/268,787.55
  6. Step 6: Final answer
    x = 150,255.30

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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.