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Finding the Fourth Proportional to 307,561.05, 461,120.13 and 188,987.40

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Solution

The fourth proportional to 307,561.05, 461,120.13 and 188,987.40 is: 283,345.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,561.05 : 461,120.13 = 188,987.40 : x
  2. Step 2: Convert to fraction form
    307,561.05/461,120.13 = 188,987.40/x
  3. Step 3: Cross multiply
    307,561.05x = 461,120.13 × 188,987.40
  4. Step 4: Simplify right side
    307,561.05x = 87,145,894,456.36
  5. Step 5: Solve for x
    x = 87,145,894,456.36/307,561.05
  6. Step 6: Final answer
    x = 283,345.03

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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.