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Finding the Fourth Proportional to 439,612.35, 659,326.25 and 123,995.45

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Solution

The fourth proportional to 439,612.35, 659,326.25 and 123,995.45 is: 185,967.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,612.35 : 659,326.25 = 123,995.45 : x
  2. Step 2: Convert to fraction form
    439,612.35/659,326.25 = 123,995.45/x
  3. Step 3: Cross multiply
    439,612.35x = 659,326.25 × 123,995.45
  4. Step 4: Simplify right side
    439,612.35x = 81,753,455,065.56
  5. Step 5: Solve for x
    x = 81,753,455,065.56/439,612.35
  6. Step 6: Final answer
    x = 185,967.15

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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.