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Finding the Fourth Proportional to 279,742.96, 386,049.60 and 152,418.52

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Solution

The fourth proportional to 279,742.96, 386,049.60 and 152,418.52 is: 210,339.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,742.96 : 386,049.60 = 152,418.52 : x
  2. Step 2: Convert to fraction form
    279,742.96/386,049.60 = 152,418.52/x
  3. Step 3: Cross multiply
    279,742.96x = 386,049.60 × 152,418.52
  4. Step 4: Simplify right side
    279,742.96x = 58,841,108,678.59
  5. Step 5: Solve for x
    x = 58,841,108,678.59/279,742.96
  6. Step 6: Final answer
    x = 210,339.91

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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.