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Finding the Fourth Proportional to 312,853.31, 469,279.39 and 270,607.76

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Solution

The fourth proportional to 312,853.31, 469,279.39 and 270,607.76 is: 405,911.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,853.31 : 469,279.39 = 270,607.76 : x
  2. Step 2: Convert to fraction form
    312,853.31/469,279.39 = 270,607.76/x
  3. Step 3: Cross multiply
    312,853.31x = 469,279.39 × 270,607.76
  4. Step 4: Simplify right side
    312,853.31x = 126,990,644,542.07
  5. Step 5: Solve for x
    x = 126,990,644,542.07/312,853.31
  6. Step 6: Final answer
    x = 405,911.14

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1.5x scale

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.