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Finding the Fourth Proportional to 312,776.79, 431,632.90 and 169,537.41

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Solution

The fourth proportional to 312,776.79, 431,632.90 and 169,537.41 is: 233,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,776.79 : 431,632.90 = 169,537.41 : x
  2. Step 2: Convert to fraction form
    312,776.79/431,632.90 = 169,537.41/x
  3. Step 3: Cross multiply
    312,776.79x = 431,632.90 × 169,537.41
  4. Step 4: Simplify right side
    312,776.79x = 73,177,923,936.79
  5. Step 5: Solve for x
    x = 73,177,923,936.79/312,776.79
  6. Step 6: Final answer
    x = 233,962.13

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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.