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Finding the Fourth Proportional to 279,736, 386,037.92 and 152,408.32

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Solution

The fourth proportional to 279,736, 386,037.92 and 152,408.32 is: 210,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,736 : 386,037.92 = 152,408.32 : x
  2. Step 2: Convert to fraction form
    279,736/386,037.92 = 152,408.32/x
  3. Step 3: Cross multiply
    279,736x = 386,037.92 × 152,408.32
  4. Step 4: Simplify right side
    279,736x = 58,835,390,843.49
  5. Step 5: Solve for x
    x = 58,835,390,843.49/279,736
  6. Step 6: Final answer
    x = 210,324.70

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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.