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Finding the Fourth Proportional to 274,613.04, 378,945.72 and 153,726.48

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Solution

The fourth proportional to 274,613.04, 378,945.72 and 153,726.48 is: 212,131.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,613.04 : 378,945.72 = 153,726.48 : x
  2. Step 2: Convert to fraction form
    274,613.04/378,945.72 = 153,726.48/x
  3. Step 3: Cross multiply
    274,613.04x = 378,945.72 × 153,726.48
  4. Step 4: Simplify right side
    274,613.04x = 58,253,991,646.67
  5. Step 5: Solve for x
    x = 58,253,991,646.67/274,613.04
  6. Step 6: Final answer
    x = 212,131.19

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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.