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Finding the Fourth Proportional to 299,466.40, 413,298.96 and 172,147.36

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Solution

The fourth proportional to 299,466.40, 413,298.96 and 172,147.36 is: 237,583.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,466.40 : 413,298.96 = 172,147.36 : x
  2. Step 2: Convert to fraction form
    299,466.40/413,298.96 = 172,147.36/x
  3. Step 3: Cross multiply
    299,466.40x = 413,298.96 × 172,147.36
  4. Step 4: Simplify right side
    299,466.40x = 71,148,324,854.75
  5. Step 5: Solve for x
    x = 71,148,324,854.75/299,466.40
  6. Step 6: Final answer
    x = 237,583.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.