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Finding the Fourth Proportional to 325,073.48, 487,488.96 and 111,781.06

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Solution

The fourth proportional to 325,073.48, 487,488.96 and 111,781.06 is: 167,629.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,073.48 : 487,488.96 = 111,781.06 : x
  2. Step 2: Convert to fraction form
    325,073.48/487,488.96 = 111,781.06/x
  3. Step 3: Cross multiply
    325,073.48x = 487,488.96 × 111,781.06
  4. Step 4: Simplify right side
    325,073.48x = 54,492,030,249.65
  5. Step 5: Solve for x
    x = 54,492,030,249.65/325,073.48
  6. Step 6: Final answer
    x = 167,629.89

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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.