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Finding the Fourth Proportional to 281,806.60, 388,911.20 and 154,482.52

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Solution

The fourth proportional to 281,806.60, 388,911.20 and 154,482.52 is: 213,195.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,806.60 : 388,911.20 = 154,482.52 : x
  2. Step 2: Convert to fraction form
    281,806.60/388,911.20 = 154,482.52/x
  3. Step 3: Cross multiply
    281,806.60x = 388,911.20 × 154,482.52
  4. Step 4: Simplify right side
    281,806.60x = 60,079,982,232.22
  5. Step 5: Solve for x
    x = 60,079,982,232.22/281,806.60
  6. Step 6: Final answer
    x = 213,195.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.