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Finding the Fourth Proportional to 307,539.88, 424,419.78 and 173,401

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Solution

The fourth proportional to 307,539.88, 424,419.78 and 173,401 is: 239,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,539.88 : 424,419.78 = 173,401 : x
  2. Step 2: Convert to fraction form
    307,539.88/424,419.78 = 173,401/x
  3. Step 3: Cross multiply
    307,539.88x = 424,419.78 × 173,401
  4. Step 4: Simplify right side
    307,539.88x = 73,594,814,271.78
  5. Step 5: Solve for x
    x = 73,594,814,271.78/307,539.88
  6. Step 6: Final answer
    x = 239,301.69

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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.