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Finding the Fourth Proportional to 606,431.20, 908,917.80 and 251,262.40

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Solution

The fourth proportional to 606,431.20, 908,917.80 and 251,262.40 is: 376,591.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,431.20 : 908,917.80 = 251,262.40 : x
  2. Step 2: Convert to fraction form
    606,431.20/908,917.80 = 251,262.40/x
  3. Step 3: Cross multiply
    606,431.20x = 908,917.80 × 251,262.40
  4. Step 4: Simplify right side
    606,431.20x = 228,376,867,830.72
  5. Step 5: Solve for x
    x = 228,376,867,830.72/606,431.20
  6. Step 6: Final answer
    x = 376,591.55

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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.