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Finding the Fourth Proportional to 439,878.60, 659,664.30 and 229,446.60

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Solution

The fourth proportional to 439,878.60, 659,664.30 and 229,446.60 is: 344,089.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,878.60 : 659,664.30 = 229,446.60 : x
  2. Step 2: Convert to fraction form
    439,878.60/659,664.30 = 229,446.60/x
  3. Step 3: Cross multiply
    439,878.60x = 659,664.30 × 229,446.60
  4. Step 4: Simplify right side
    439,878.60x = 151,357,730,776.38
  5. Step 5: Solve for x
    x = 151,357,730,776.38/439,878.60
  6. Step 6: Final answer
    x = 344,089.78

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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.