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Finding the Fourth Proportional to 503,640.80, 755,461.20 and 171,216.80

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Solution

The fourth proportional to 503,640.80, 755,461.20 and 171,216.80 is: 256,825.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    503,640.80 : 755,461.20 = 171,216.80 : x
  2. Step 2: Convert to fraction form
    503,640.80/755,461.20 = 171,216.80/x
  3. Step 3: Cross multiply
    503,640.80x = 755,461.20 × 171,216.80
  4. Step 4: Simplify right side
    503,640.80x = 129,347,649,188.16
  5. Step 5: Solve for x
    x = 129,347,649,188.16/503,640.80
  6. Step 6: Final answer
    x = 256,825.20

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Double scale
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Similar ratio
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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.