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Finding the Fourth Proportional to 279,390.96, 385,559.49 and 152,067.48

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Solution

The fourth proportional to 279,390.96, 385,559.49 and 152,067.48 is: 209,853.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,390.96 : 385,559.49 = 152,067.48 : x
  2. Step 2: Convert to fraction form
    279,390.96/385,559.49 = 152,067.48/x
  3. Step 3: Cross multiply
    279,390.96x = 385,559.49 × 152,067.48
  4. Step 4: Simplify right side
    279,390.96x = 58,631,060,034.39
  5. Step 5: Solve for x
    x = 58,631,060,034.39/279,390.96
  6. Step 6: Final answer
    x = 209,853.10

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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.