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Finding the Fourth Proportional to 377,550.78, 521,009.19 and 207,781.26

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Solution

The fourth proportional to 377,550.78, 521,009.19 and 207,781.26 is: 286,732.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,550.78 : 521,009.19 = 207,781.26 : x
  2. Step 2: Convert to fraction form
    377,550.78/521,009.19 = 207,781.26/x
  3. Step 3: Cross multiply
    377,550.78x = 521,009.19 × 207,781.26
  4. Step 4: Simplify right side
    377,550.78x = 108,255,945,969.78
  5. Step 5: Solve for x
    x = 108,255,945,969.78/377,550.78
  6. Step 6: Final answer
    x = 286,732.15

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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.