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Finding the Fourth Proportional to 269,988.78, 372,656.52 and 155,279.82

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Solution

The fourth proportional to 269,988.78, 372,656.52 and 155,279.82 is: 214,327.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,988.78 : 372,656.52 = 155,279.82 : x
  2. Step 2: Convert to fraction form
    269,988.78/372,656.52 = 155,279.82/x
  3. Step 3: Cross multiply
    269,988.78x = 372,656.52 × 155,279.82
  4. Step 4: Simplify right side
    269,988.78x = 57,866,037,347.43
  5. Step 5: Solve for x
    x = 57,866,037,347.43/269,988.78
  6. Step 6: Final answer
    x = 214,327.56

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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.