Home / 312,786.12-431,633.28-169,543.09

Finding the Fourth Proportional to 312,786.12, 431,633.28 and 169,543.09

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Solution

The fourth proportional to 312,786.12, 431,633.28 and 169,543.09 is: 233,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,786.12 : 431,633.28 = 169,543.09 : x
  2. Step 2: Convert to fraction form
    312,786.12/431,633.28 = 169,543.09/x
  3. Step 3: Cross multiply
    312,786.12x = 431,633.28 × 169,543.09
  4. Step 4: Simplify right side
    312,786.12x = 73,180,440,038.04
  5. Step 5: Solve for x
    x = 73,180,440,038.04/312,786.12
  6. Step 6: Final answer
    x = 233,963.20

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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.