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Finding the Fourth Proportional to 171,983.40, 257,756.40 and 153,175.20

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Solution

The fourth proportional to 171,983.40, 257,756.40 and 153,175.20 is: 229,568.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,983.40 : 257,756.40 = 153,175.20 : x
  2. Step 2: Convert to fraction form
    171,983.40/257,756.40 = 153,175.20/x
  3. Step 3: Cross multiply
    171,983.40x = 257,756.40 × 153,175.20
  4. Step 4: Simplify right side
    171,983.40x = 39,481,888,121.28
  5. Step 5: Solve for x
    x = 39,481,888,121.28/171,983.40
  6. Step 6: Final answer
    x = 229,568.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.