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Finding the Fourth Proportional to 216,655.40, 325,175.10 and 127,797.80

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Solution

The fourth proportional to 216,655.40, 325,175.10 and 127,797.80 is: 191,809.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,655.40 : 325,175.10 = 127,797.80 : x
  2. Step 2: Convert to fraction form
    216,655.40/325,175.10 = 127,797.80/x
  3. Step 3: Cross multiply
    216,655.40x = 325,175.10 × 127,797.80
  4. Step 4: Simplify right side
    216,655.40x = 41,556,662,394.78
  5. Step 5: Solve for x
    x = 41,556,662,394.78/216,655.40
  6. Step 6: Final answer
    x = 191,809.95

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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.