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Finding the Fourth Proportional to 387,937.80, 535,273.93 and 226,761.66

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Solution

The fourth proportional to 387,937.80, 535,273.93 and 226,761.66 is: 312,884.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,937.80 : 535,273.93 = 226,761.66 : x
  2. Step 2: Convert to fraction form
    387,937.80/535,273.93 = 226,761.66/x
  3. Step 3: Cross multiply
    387,937.80x = 535,273.93 × 226,761.66
  4. Step 4: Simplify right side
    387,937.80x = 121,379,604,921.52
  5. Step 5: Solve for x
    x = 121,379,604,921.52/387,937.80
  6. Step 6: Final answer
    x = 312,884.19

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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.