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Finding the Fourth Proportional to 278,760.60, 416,034.29 and 251,856.45

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Solution

The fourth proportional to 278,760.60, 416,034.29 and 251,856.45 is: 375,881.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,760.60 : 416,034.29 = 251,856.45 : x
  2. Step 2: Convert to fraction form
    278,760.60/416,034.29 = 251,856.45/x
  3. Step 3: Cross multiply
    278,760.60x = 416,034.29 × 251,856.45
  4. Step 4: Simplify right side
    278,760.60x = 104,780,919,987.31
  5. Step 5: Solve for x
    x = 104,780,919,987.31/278,760.60
  6. Step 6: Final answer
    x = 375,881.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.