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Finding the Fourth Proportional to 268,300.77, 402,469.79 and 90,747.76

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Solution

The fourth proportional to 268,300.77, 402,469.79 and 90,747.76 is: 136,127.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,300.77 : 402,469.79 = 90,747.76 : x
  2. Step 2: Convert to fraction form
    268,300.77/402,469.79 = 90,747.76/x
  3. Step 3: Cross multiply
    268,300.77x = 402,469.79 × 90,747.76
  4. Step 4: Simplify right side
    268,300.77x = 36,523,231,910.17
  5. Step 5: Solve for x
    x = 36,523,231,910.17/268,300.77
  6. Step 6: Final answer
    x = 136,127.94

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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.