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Finding the Fourth Proportional to 274,167.56, 378,386.46 and 153,315.61

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Solution

The fourth proportional to 274,167.56, 378,386.46 and 153,315.61 is: 211,595.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,167.56 : 378,386.46 = 153,315.61 : x
  2. Step 2: Convert to fraction form
    274,167.56/378,386.46 = 153,315.61/x
  3. Step 3: Cross multiply
    274,167.56x = 378,386.46 × 153,315.61
  4. Step 4: Simplify right side
    274,167.56x = 58,012,551,480.09
  5. Step 5: Solve for x
    x = 58,012,551,480.09/274,167.56
  6. Step 6: Final answer
    x = 211,595.24

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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.