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Finding the Fourth Proportional to 303,507.60, 455,261.40 and 277,919.70

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Solution

The fourth proportional to 303,507.60, 455,261.40 and 277,919.70 is: 416,879.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,507.60 : 455,261.40 = 277,919.70 : x
  2. Step 2: Convert to fraction form
    303,507.60/455,261.40 = 277,919.70/x
  3. Step 3: Cross multiply
    303,507.60x = 455,261.40 × 277,919.70
  4. Step 4: Simplify right side
    303,507.60x = 126,526,111,709.58
  5. Step 5: Solve for x
    x = 126,526,111,709.58/303,507.60
  6. Step 6: Final answer
    x = 416,879.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.