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Finding the Fourth Proportional to 316,565.15, 436,843.13 and 173,297.61

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Solution

The fourth proportional to 316,565.15, 436,843.13 and 173,297.61 is: 239,141.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,565.15 : 436,843.13 = 173,297.61 : x
  2. Step 2: Convert to fraction form
    316,565.15/436,843.13 = 173,297.61/x
  3. Step 3: Cross multiply
    316,565.15x = 436,843.13 × 173,297.61
  4. Step 4: Simplify right side
    316,565.15x = 75,703,869,507.43
  5. Step 5: Solve for x
    x = 75,703,869,507.43/316,565.15
  6. Step 6: Final answer
    x = 239,141.52

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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.