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Finding the Fourth Proportional to 307,418.36, 424,238.09 and 171,461.11

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Solution

The fourth proportional to 307,418.36, 424,238.09 and 171,461.11 is: 236,616.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,418.36 : 424,238.09 = 171,461.11 : x
  2. Step 2: Convert to fraction form
    307,418.36/424,238.09 = 171,461.11/x
  3. Step 3: Cross multiply
    307,418.36x = 424,238.09 × 171,461.11
  4. Step 4: Simplify right side
    307,418.36x = 72,740,335,207.89
  5. Step 5: Solve for x
    x = 72,740,335,207.89/307,418.36
  6. Step 6: Final answer
    x = 236,616.76

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1.5x scale

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.