Home / 268,412.49-402,608.22-90,919.50

Finding the Fourth Proportional to 268,412.49, 402,608.22 and 90,919.50

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Solution

The fourth proportional to 268,412.49, 402,608.22 and 90,919.50 is: 136,375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,412.49 : 402,608.22 = 90,919.50 : x
  2. Step 2: Convert to fraction form
    268,412.49/402,608.22 = 90,919.50/x
  3. Step 3: Cross multiply
    268,412.49x = 402,608.22 × 90,919.50
  4. Step 4: Simplify right side
    268,412.49x = 36,604,936,718.98
  5. Step 5: Solve for x
    x = 36,604,936,718.98/268,412.49
  6. Step 6: Final answer
    x = 136,375.68

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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.