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Finding the Fourth Proportional to 397,172.16, 547,877.52 and 251,710.80

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Solution

The fourth proportional to 397,172.16, 547,877.52 and 251,710.80 is: 347,221.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,172.16 : 547,877.52 = 251,710.80 : x
  2. Step 2: Convert to fraction form
    397,172.16/547,877.52 = 251,710.80/x
  3. Step 3: Cross multiply
    397,172.16x = 547,877.52 × 251,710.80
  4. Step 4: Simplify right side
    397,172.16x = 137,906,688,861.22
  5. Step 5: Solve for x
    x = 137,906,688,861.22/397,172.16
  6. Step 6: Final answer
    x = 347,221.44

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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.