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Finding the Fourth Proportional to 227,403.60, 340,449.30 and 138,830.10

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Solution

The fourth proportional to 227,403.60, 340,449.30 and 138,830.10 is: 207,844.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,403.60 : 340,449.30 = 138,830.10 : x
  2. Step 2: Convert to fraction form
    227,403.60/340,449.30 = 138,830.10/x
  3. Step 3: Cross multiply
    227,403.60x = 340,449.30 × 138,830.10
  4. Step 4: Simplify right side
    227,403.60x = 47,264,610,363.93
  5. Step 5: Solve for x
    x = 47,264,610,363.93/227,403.60
  6. Step 6: Final answer
    x = 207,844.60

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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.