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Finding the Fourth Proportional to 205,622.60, 308,549.10 and 87,273.80

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Solution

The fourth proportional to 205,622.60, 308,549.10 and 87,273.80 is: 130,959.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,622.60 : 308,549.10 = 87,273.80 : x
  2. Step 2: Convert to fraction form
    205,622.60/308,549.10 = 87,273.80/x
  3. Step 3: Cross multiply
    205,622.60x = 308,549.10 × 87,273.80
  4. Step 4: Simplify right side
    205,622.60x = 26,928,252,443.58
  5. Step 5: Solve for x
    x = 26,928,252,443.58/205,622.60
  6. Step 6: Final answer
    x = 130,959.60

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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.