Home / 312,890.02-431,761.53-176,917.30

Finding the Fourth Proportional to 312,890.02, 431,761.53 and 176,917.30

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Solution

The fourth proportional to 312,890.02, 431,761.53 and 176,917.30 is: 244,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,890.02 : 431,761.53 = 176,917.30 : x
  2. Step 2: Convert to fraction form
    312,890.02/431,761.53 = 176,917.30/x
  3. Step 3: Cross multiply
    312,890.02x = 431,761.53 × 176,917.30
  4. Step 4: Simplify right side
    312,890.02x = 76,386,084,131.47
  5. Step 5: Solve for x
    x = 76,386,084,131.47/312,890.02
  6. Step 6: Final answer
    x = 244,130.78

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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.