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Finding the Fourth Proportional to 251,645.91, 377,480.70 and 74,154.45

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Solution

The fourth proportional to 251,645.91, 377,480.70 and 74,154.45 is: 111,235.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,645.91 : 377,480.70 = 74,154.45 : x
  2. Step 2: Convert to fraction form
    251,645.91/377,480.70 = 74,154.45/x
  3. Step 3: Cross multiply
    251,645.91x = 377,480.70 × 74,154.45
  4. Step 4: Simplify right side
    251,645.91x = 27,991,873,694.12
  5. Step 5: Solve for x
    x = 27,991,873,694.12/251,645.91
  6. Step 6: Final answer
    x = 111,235.16

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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.