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Finding the Fourth Proportional to 172,404.40, 258,606.60 and 133,038.40

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Solution

The fourth proportional to 172,404.40, 258,606.60 and 133,038.40 is: 199,557.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,404.40 : 258,606.60 = 133,038.40 : x
  2. Step 2: Convert to fraction form
    172,404.40/258,606.60 = 133,038.40/x
  3. Step 3: Cross multiply
    172,404.40x = 258,606.60 × 133,038.40
  4. Step 4: Simplify right side
    172,404.40x = 34,404,608,293.44
  5. Step 5: Solve for x
    x = 34,404,608,293.44/172,404.40
  6. Step 6: Final answer
    x = 199,557.60

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