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Finding the Fourth Proportional to 448,578.39, 619,086.19 and 274,250.88

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Solution

The fourth proportional to 448,578.39, 619,086.19 and 274,250.88 is: 378,495.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,578.39 : 619,086.19 = 274,250.88 : x
  2. Step 2: Convert to fraction form
    448,578.39/619,086.19 = 274,250.88/x
  3. Step 3: Cross multiply
    448,578.39x = 619,086.19 × 274,250.88
  4. Step 4: Simplify right side
    448,578.39x = 169,784,931,032.09
  5. Step 5: Solve for x
    x = 169,784,931,032.09/448,578.39
  6. Step 6: Final answer
    x = 378,495.57

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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.