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Finding the Fourth Proportional to 279,257.76, 385,364.25 and 151,933.41

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Solution

The fourth proportional to 279,257.76, 385,364.25 and 151,933.41 is: 209,661.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,257.76 : 385,364.25 = 151,933.41 : x
  2. Step 2: Convert to fraction form
    279,257.76/385,364.25 = 151,933.41/x
  3. Step 3: Cross multiply
    279,257.76x = 385,364.25 × 151,933.41
  4. Step 4: Simplify right side
    279,257.76x = 58,549,704,594.59
  5. Step 5: Solve for x
    x = 58,549,704,594.59/279,257.76
  6. Step 6: Final answer
    x = 209,661.87

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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.