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Finding the Fourth Proportional to 316,027.38, 436,118.76 and 172,789.80

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Solution

The fourth proportional to 316,027.38, 436,118.76 and 172,789.80 is: 238,450.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,027.38 : 436,118.76 = 172,789.80 : x
  2. Step 2: Convert to fraction form
    316,027.38/436,118.76 = 172,789.80/x
  3. Step 3: Cross multiply
    316,027.38x = 436,118.76 × 172,789.80
  4. Step 4: Simplify right side
    316,027.38x = 75,356,873,316.65
  5. Step 5: Solve for x
    x = 75,356,873,316.65/316,027.38
  6. Step 6: Final answer
    x = 238,450.46

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1.5x scale

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.