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Finding the Fourth Proportional to 281,195.46, 388,049.67 and 153,871.02

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Solution

The fourth proportional to 281,195.46, 388,049.67 and 153,871.02 is: 212,341.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,195.46 : 388,049.67 = 153,871.02 : x
  2. Step 2: Convert to fraction form
    281,195.46/388,049.67 = 153,871.02/x
  3. Step 3: Cross multiply
    281,195.46x = 388,049.67 × 153,871.02
  4. Step 4: Simplify right side
    281,195.46x = 59,709,598,533.56
  5. Step 5: Solve for x
    x = 59,709,598,533.56/281,195.46
  6. Step 6: Final answer
    x = 212,341.97

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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.