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Finding the Fourth Proportional to 279,868.86, 386,219.34 and 152,544.42

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Solution

The fourth proportional to 279,868.86, 386,219.34 and 152,544.42 is: 210,511.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,868.86 : 386,219.34 = 152,544.42 : x
  2. Step 2: Convert to fraction form
    279,868.86/386,219.34 = 152,544.42/x
  3. Step 3: Cross multiply
    279,868.86x = 386,219.34 × 152,544.42
  4. Step 4: Simplify right side
    279,868.86x = 58,915,605,213.08
  5. Step 5: Solve for x
    x = 58,915,605,213.08/279,868.86
  6. Step 6: Final answer
    x = 210,511.47

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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.