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Finding the Fourth Proportional to 279,326.60, 418,817.10 and 160,939.40

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Solution

The fourth proportional to 279,326.60, 418,817.10 and 160,939.40 is: 241,309.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,326.60 : 418,817.10 = 160,939.40 : x
  2. Step 2: Convert to fraction form
    279,326.60/418,817.10 = 160,939.40/x
  3. Step 3: Cross multiply
    279,326.60x = 418,817.10 × 160,939.40
  4. Step 4: Simplify right side
    279,326.60x = 67,404,172,783.74
  5. Step 5: Solve for x
    x = 67,404,172,783.74/279,326.60
  6. Step 6: Final answer
    x = 241,309.54

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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.