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Finding the Fourth Proportional to 351,391.21, 527,020.30 and 171,295.74

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Solution

The fourth proportional to 351,391.21, 527,020.30 and 171,295.74 is: 256,911.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,391.21 : 527,020.30 = 171,295.74 : x
  2. Step 2: Convert to fraction form
    351,391.21/527,020.30 = 171,295.74/x
  3. Step 3: Cross multiply
    351,391.21x = 527,020.30 × 171,295.74
  4. Step 4: Simplify right side
    351,391.21x = 90,276,332,283.52
  5. Step 5: Solve for x
    x = 90,276,332,283.52/351,391.21
  6. Step 6: Final answer
    x = 256,911.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.