Home / 312,864.30-431,726.13-176,879.37

Finding the Fourth Proportional to 312,864.30, 431,726.13 and 176,879.37

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Solution

The fourth proportional to 312,864.30, 431,726.13 and 176,879.37 is: 244,078.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,864.30 : 431,726.13 = 176,879.37 : x
  2. Step 2: Convert to fraction form
    312,864.30/431,726.13 = 176,879.37/x
  3. Step 3: Cross multiply
    312,864.30x = 431,726.13 × 176,879.37
  4. Step 4: Simplify right side
    312,864.30x = 76,363,445,886.94
  5. Step 5: Solve for x
    x = 76,363,445,886.94/312,864.30
  6. Step 6: Final answer
    x = 244,078.49

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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.