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Finding the Fourth Proportional to 281,347.48, 388,266.36 and 154,022.68

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Solution

The fourth proportional to 281,347.48, 388,266.36 and 154,022.68 is: 212,555.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,347.48 : 388,266.36 = 154,022.68 : x
  2. Step 2: Convert to fraction form
    281,347.48/388,266.36 = 154,022.68/x
  3. Step 3: Cross multiply
    281,347.48x = 388,266.36 × 154,022.68
  4. Step 4: Simplify right side
    281,347.48x = 59,801,825,321.04
  5. Step 5: Solve for x
    x = 59,801,825,321.04/281,347.48
  6. Step 6: Final answer
    x = 212,555.04

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1.5x scale

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.