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Finding the Fourth Proportional to 307,384.46, 424,193.01 and 171,427.17

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Solution

The fourth proportional to 307,384.46, 424,193.01 and 171,427.17 is: 236,570.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,384.46 : 424,193.01 = 171,427.17 : x
  2. Step 2: Convert to fraction form
    307,384.46/424,193.01 = 171,427.17/x
  3. Step 3: Cross multiply
    307,384.46x = 424,193.01 × 171,427.17
  4. Step 4: Simplify right side
    307,384.46x = 72,718,207,238.08
  5. Step 5: Solve for x
    x = 72,718,207,238.08/307,384.46
  6. Step 6: Final answer
    x = 236,570.86

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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.