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Finding the Fourth Proportional to 438,908.60, 657,968.70 and 172,850.60

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Solution

The fourth proportional to 438,908.60, 657,968.70 and 172,850.60 is: 259,120.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,908.60 : 657,968.70 = 172,850.60 : x
  2. Step 2: Convert to fraction form
    438,908.60/657,968.70 = 172,850.60/x
  3. Step 3: Cross multiply
    438,908.60x = 657,968.70 × 172,850.60
  4. Step 4: Simplify right side
    438,908.60x = 113,730,284,576.22
  5. Step 5: Solve for x
    x = 113,730,284,576.22/438,908.60
  6. Step 6: Final answer
    x = 259,120.66

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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.