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Finding the Fourth Proportional to 281,404.62, 388,377.06 and 172,574.01

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Solution

The fourth proportional to 281,404.62, 388,377.06 and 172,574.01 is: 238,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,404.62 : 388,377.06 = 172,574.01 : x
  2. Step 2: Convert to fraction form
    281,404.62/388,377.06 = 172,574.01/x
  3. Step 3: Cross multiply
    281,404.62x = 388,377.06 × 172,574.01
  4. Step 4: Simplify right side
    281,404.62x = 67,023,786,636.21
  5. Step 5: Solve for x
    x = 67,023,786,636.21/281,404.62
  6. Step 6: Final answer
    x = 238,175.86

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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.