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Finding the Fourth Proportional to 291,960.66, 402,910.96 and 171,136.20

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Solution

The fourth proportional to 291,960.66, 402,910.96 and 171,136.20 is: 236,171.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,960.66 : 402,910.96 = 171,136.20 : x
  2. Step 2: Convert to fraction form
    291,960.66/402,910.96 = 171,136.20/x
  3. Step 3: Cross multiply
    291,960.66x = 402,910.96 × 171,136.20
  4. Step 4: Simplify right side
    291,960.66x = 68,952,650,632.75
  5. Step 5: Solve for x
    x = 68,952,650,632.75/291,960.66
  6. Step 6: Final answer
    x = 236,171.03

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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.