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Finding the Fourth Proportional to 279,357.12, 385,512.84 and 152,029.92

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Solution

The fourth proportional to 279,357.12, 385,512.84 and 152,029.92 is: 209,801.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,357.12 : 385,512.84 = 152,029.92 : x
  2. Step 2: Convert to fraction form
    279,357.12/385,512.84 = 152,029.92/x
  3. Step 3: Cross multiply
    279,357.12x = 385,512.84 × 152,029.92
  4. Step 4: Simplify right side
    279,357.12x = 58,609,486,224.17
  5. Step 5: Solve for x
    x = 58,609,486,224.17/279,357.12
  6. Step 6: Final answer
    x = 209,801.30

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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.