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Finding the Fourth Proportional to 268,483.70, 402,697.83 and 90,986.12

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Solution

The fourth proportional to 268,483.70, 402,697.83 and 90,986.12 is: 136,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,483.70 : 402,697.83 = 90,986.12 : x
  2. Step 2: Convert to fraction form
    268,483.70/402,697.83 = 90,986.12/x
  3. Step 3: Cross multiply
    268,483.70x = 402,697.83 × 90,986.12
  4. Step 4: Simplify right side
    268,483.70x = 36,639,913,084.12
  5. Step 5: Solve for x
    x = 36,639,913,084.12/268,483.70
  6. Step 6: Final answer
    x = 136,469.79

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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.