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Finding the Fourth Proportional to 278,818.91, 384,773.60 and 151,496.63

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Solution

The fourth proportional to 278,818.91, 384,773.60 and 151,496.63 is: 209,067.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,818.91 : 384,773.60 = 151,496.63 : x
  2. Step 2: Convert to fraction form
    278,818.91/384,773.60 = 151,496.63/x
  3. Step 3: Cross multiply
    278,818.91x = 384,773.60 × 151,496.63
  4. Step 4: Simplify right side
    278,818.91x = 58,291,903,712.97
  5. Step 5: Solve for x
    x = 58,291,903,712.97/278,818.91
  6. Step 6: Final answer
    x = 209,067.25

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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.