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Finding the Fourth Proportional to 381,996.60, 572,822.10 and 145,260.60

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Solution

The fourth proportional to 381,996.60, 572,822.10 and 145,260.60 is: 217,825.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,996.60 : 572,822.10 = 145,260.60 : x
  2. Step 2: Convert to fraction form
    381,996.60/572,822.10 = 145,260.60/x
  3. Step 3: Cross multiply
    381,996.60x = 572,822.10 × 145,260.60
  4. Step 4: Simplify right side
    381,996.60x = 83,208,481,939.26
  5. Step 5: Solve for x
    x = 83,208,481,939.26/381,996.60
  6. Step 6: Final answer
    x = 217,825.19

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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.