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Finding the Fourth Proportional to 187,215.70, 280,823.55 and 171,469.30

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Solution

The fourth proportional to 187,215.70, 280,823.55 and 171,469.30 is: 257,203.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,215.70 : 280,823.55 = 171,469.30 : x
  2. Step 2: Convert to fraction form
    187,215.70/280,823.55 = 171,469.30/x
  3. Step 3: Cross multiply
    187,215.70x = 280,823.55 × 171,469.30
  4. Step 4: Simplify right side
    187,215.70x = 48,152,617,542.02
  5. Step 5: Solve for x
    x = 48,152,617,542.02/187,215.70
  6. Step 6: Final answer
    x = 257,203.95

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1.5x scale

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.