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Finding the Fourth Proportional to 277,870.30, 416,805.45 and 90,836.70

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Solution

The fourth proportional to 277,870.30, 416,805.45 and 90,836.70 is: 136,255.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,870.30 : 416,805.45 = 90,836.70 : x
  2. Step 2: Convert to fraction form
    277,870.30/416,805.45 = 90,836.70/x
  3. Step 3: Cross multiply
    277,870.30x = 416,805.45 × 90,836.70
  4. Step 4: Simplify right side
    277,870.30x = 37,861,231,620.02
  5. Step 5: Solve for x
    x = 37,861,231,620.02/277,870.30
  6. Step 6: Final answer
    x = 136,255.05

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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.