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Finding the Fourth Proportional to 312,717.27, 431,549.85 and 169,477.27

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Solution

The fourth proportional to 312,717.27, 431,549.85 and 169,477.27 is: 233,878.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,717.27 : 431,549.85 = 169,477.27 : x
  2. Step 2: Convert to fraction form
    312,717.27/431,549.85 = 169,477.27/x
  3. Step 3: Cross multiply
    312,717.27x = 431,549.85 × 169,477.27
  4. Step 4: Simplify right side
    312,717.27x = 73,137,890,446.91
  5. Step 5: Solve for x
    x = 73,137,890,446.91/312,717.27
  6. Step 6: Final answer
    x = 233,878.65

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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.