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Finding the Fourth Proportional to 172,361.80, 258,542.70 and 154,282.60

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Solution

The fourth proportional to 172,361.80, 258,542.70 and 154,282.60 is: 231,423.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,361.80 : 258,542.70 = 154,282.60 : x
  2. Step 2: Convert to fraction form
    172,361.80/258,542.70 = 154,282.60/x
  3. Step 3: Cross multiply
    172,361.80x = 258,542.70 × 154,282.60
  4. Step 4: Simplify right side
    172,361.80x = 39,888,639,967.02
  5. Step 5: Solve for x
    x = 39,888,639,967.02/172,361.80
  6. Step 6: Final answer
    x = 231,423.90

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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.