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Finding the Fourth Proportional to 418,701.87, 628,073.33 and 119,203.47

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Solution

The fourth proportional to 418,701.87, 628,073.33 and 119,203.47 is: 178,811.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,701.87 : 628,073.33 = 119,203.47 : x
  2. Step 2: Convert to fraction form
    418,701.87/628,073.33 = 119,203.47/x
  3. Step 3: Cross multiply
    418,701.87x = 628,073.33 × 119,203.47
  4. Step 4: Simplify right side
    418,701.87x = 74,868,519,754.44
  5. Step 5: Solve for x
    x = 74,868,519,754.44/418,701.87
  6. Step 6: Final answer
    x = 178,811.05

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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.