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Finding the Fourth Proportional to 279,527.76, 385,728.80 and 158,671.52

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Solution

The fourth proportional to 279,527.76, 385,728.80 and 158,671.52 is: 218,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,527.76 : 385,728.80 = 158,671.52 : x
  2. Step 2: Convert to fraction form
    279,527.76/385,728.80 = 158,671.52/x
  3. Step 3: Cross multiply
    279,527.76x = 385,728.80 × 158,671.52
  4. Step 4: Simplify right side
    279,527.76x = 61,204,175,003.78
  5. Step 5: Solve for x
    x = 61,204,175,003.78/279,527.76
  6. Step 6: Final answer
    x = 218,955.62

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1.5x scale

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.