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Finding the Fourth Proportional to 171,990.90, 257,767.65 and 153,182.70

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Solution

The fourth proportional to 171,990.90, 257,767.65 and 153,182.70 is: 229,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,990.90 : 257,767.65 = 153,182.70 : x
  2. Step 2: Convert to fraction form
    171,990.90/257,767.65 = 153,182.70/x
  3. Step 3: Cross multiply
    171,990.90x = 257,767.65 × 153,182.70
  4. Step 4: Simplify right side
    171,990.90x = 39,485,544,599.66
  5. Step 5: Solve for x
    x = 39,485,544,599.66/171,990.90
  6. Step 6: Final answer
    x = 229,579.27

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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.