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Finding the Fourth Proportional to 172,558.40, 258,837.60 and 165,030.80

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Solution

The fourth proportional to 172,558.40, 258,837.60 and 165,030.80 is: 247,546.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,558.40 : 258,837.60 = 165,030.80 : x
  2. Step 2: Convert to fraction form
    172,558.40/258,837.60 = 165,030.80/x
  3. Step 3: Cross multiply
    172,558.40x = 258,837.60 × 165,030.80
  4. Step 4: Simplify right side
    172,558.40x = 42,716,176,198.08
  5. Step 5: Solve for x
    x = 42,716,176,198.08/172,558.40
  6. Step 6: Final answer
    x = 247,546.20

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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.