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Finding the Fourth Proportional to 216,674.40, 325,203.60 and 127,816.80

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Solution

The fourth proportional to 216,674.40, 325,203.60 and 127,816.80 is: 191,838.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,674.40 : 325,203.60 = 127,816.80 : x
  2. Step 2: Convert to fraction form
    216,674.40/325,203.60 = 127,816.80/x
  3. Step 3: Cross multiply
    216,674.40x = 325,203.60 × 127,816.80
  4. Step 4: Simplify right side
    216,674.40x = 41,566,483,500.48
  5. Step 5: Solve for x
    x = 41,566,483,500.48/216,674.40
  6. Step 6: Final answer
    x = 191,838.46

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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.