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Finding the Fourth Proportional to 312,550.88, 468,839.26 and 90,934.88

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Solution

The fourth proportional to 312,550.88, 468,839.26 and 90,934.88 is: 136,406.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,550.88 : 468,839.26 = 90,934.88 : x
  2. Step 2: Convert to fraction form
    312,550.88/468,839.26 = 90,934.88/x
  3. Step 3: Cross multiply
    312,550.88x = 468,839.26 × 90,934.88
  4. Step 4: Simplify right side
    312,550.88x = 42,633,841,847.39
  5. Step 5: Solve for x
    x = 42,633,841,847.39/312,550.88
  6. Step 6: Final answer
    x = 136,406.08

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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.