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Finding the Fourth Proportional to 661,367.25, 991,870.66 and 181,481.26

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Solution

The fourth proportional to 661,367.25, 991,870.66 and 181,481.26 is: 272,172.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,367.25 : 991,870.66 = 181,481.26 : x
  2. Step 2: Convert to fraction form
    661,367.25/991,870.66 = 181,481.26/x
  3. Step 3: Cross multiply
    661,367.25x = 991,870.66 × 181,481.26
  4. Step 4: Simplify right side
    661,367.25x = 180,005,937,133.83
  5. Step 5: Solve for x
    x = 180,005,937,133.83/661,367.25
  6. Step 6: Final answer
    x = 272,172.44

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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.