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Finding the Fourth Proportional to 313,279.57, 432,326.19 and 170,039.58

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Solution

The fourth proportional to 313,279.57, 432,326.19 and 170,039.58 is: 234,654.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,279.57 : 432,326.19 = 170,039.58 : x
  2. Step 2: Convert to fraction form
    313,279.57/432,326.19 = 170,039.58/x
  3. Step 3: Cross multiply
    313,279.57x = 432,326.19 × 170,039.58
  4. Step 4: Simplify right side
    313,279.57x = 73,512,563,770.60
  5. Step 5: Solve for x
    x = 73,512,563,770.60/313,279.57
  6. Step 6: Final answer
    x = 234,654.83

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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.