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Finding the Fourth Proportional to 279,900.85, 386,044.70 and 193,892.29

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Solution

The fourth proportional to 279,900.85, 386,044.70 and 193,892.29 is: 267,420.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,900.85 : 386,044.70 = 193,892.29 : x
  2. Step 2: Convert to fraction form
    279,900.85/386,044.70 = 193,892.29/x
  3. Step 3: Cross multiply
    279,900.85x = 386,044.70 × 193,892.29
  4. Step 4: Simplify right side
    279,900.85x = 74,851,090,925.36
  5. Step 5: Solve for x
    x = 74,851,090,925.36/279,900.85
  6. Step 6: Final answer
    x = 267,420.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.