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Finding the Fourth Proportional to 312,714.44, 431,545.86 and 169,474.49

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Solution

The fourth proportional to 312,714.44, 431,545.86 and 169,474.49 is: 233,874.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,714.44 : 431,545.86 = 169,474.49 : x
  2. Step 2: Convert to fraction form
    312,714.44/431,545.86 = 169,474.49/x
  3. Step 3: Cross multiply
    312,714.44x = 431,545.86 × 169,474.49
  4. Step 4: Simplify right side
    312,714.44x = 73,136,012,377.38
  5. Step 5: Solve for x
    x = 73,136,012,377.38/312,714.44
  6. Step 6: Final answer
    x = 233,874.76

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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.