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Finding the Fourth Proportional to 281,497.59, 388,452.24 and 154,170.45

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Solution

The fourth proportional to 281,497.59, 388,452.24 and 154,170.45 is: 212,747.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,497.59 : 388,452.24 = 154,170.45 : x
  2. Step 2: Convert to fraction form
    281,497.59/388,452.24 = 154,170.45/x
  3. Step 3: Cross multiply
    281,497.59x = 388,452.24 × 154,170.45
  4. Step 4: Simplify right side
    281,497.59x = 59,887,856,644.31
  5. Step 5: Solve for x
    x = 59,887,856,644.31/281,497.59
  6. Step 6: Final answer
    x = 212,747.32

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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.