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Finding the Fourth Proportional to 227,101.80, 340,191.90 and 128,490.60

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Solution

The fourth proportional to 227,101.80, 340,191.90 and 128,490.60 is: 192,475.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,101.80 : 340,191.90 = 128,490.60 : x
  2. Step 2: Convert to fraction form
    227,101.80/340,191.90 = 128,490.60/x
  3. Step 3: Cross multiply
    227,101.80x = 340,191.90 × 128,490.60
  4. Step 4: Simplify right side
    227,101.80x = 43,711,461,346.14
  5. Step 5: Solve for x
    x = 43,711,461,346.14/227,101.80
  6. Step 6: Final answer
    x = 192,475.19

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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.