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Finding the Fourth Proportional to 279,404.26, 385,577.79 and 152,080.75

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Solution

The fourth proportional to 279,404.26, 385,577.79 and 152,080.75 is: 209,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,404.26 : 385,577.79 = 152,080.75 : x
  2. Step 2: Convert to fraction form
    279,404.26/385,577.79 = 152,080.75/x
  3. Step 3: Cross multiply
    279,404.26x = 385,577.79 × 152,080.75
  4. Step 4: Simplify right side
    279,404.26x = 58,638,959,486.54
  5. Step 5: Solve for x
    x = 58,638,959,486.54/279,404.26
  6. Step 6: Final answer
    x = 209,871.39

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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.