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Finding the Fourth Proportional to 307,586.34, 424,467.72 and 171,612

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Solution

The fourth proportional to 307,586.34, 424,467.72 and 171,612 is: 236,823.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,586.34 : 424,467.72 = 171,612 : x
  2. Step 2: Convert to fraction form
    307,586.34/424,467.72 = 171,612/x
  3. Step 3: Cross multiply
    307,586.34x = 424,467.72 × 171,612
  4. Step 4: Simplify right side
    307,586.34x = 72,843,754,364.64
  5. Step 5: Solve for x
    x = 72,843,754,364.64/307,586.34
  6. Step 6: Final answer
    x = 236,823.76

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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.