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Finding the Fourth Proportional to 307,408, 424,229.52 and 173,272

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Solution

The fourth proportional to 307,408, 424,229.52 and 173,272 is: 239,119.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,408 : 424,229.52 = 173,272 : x
  2. Step 2: Convert to fraction form
    307,408/424,229.52 = 173,272/x
  3. Step 3: Cross multiply
    307,408x = 424,229.52 × 173,272
  4. Step 4: Simplify right side
    307,408x = 73,507,097,389.44
  5. Step 5: Solve for x
    x = 73,507,097,389.44/307,408
  6. Step 6: Final answer
    x = 239,119.01

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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.