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Finding the Fourth Proportional to 394,331.80, 590,720.10 and 236,090.20

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Solution

The fourth proportional to 394,331.80, 590,720.10 and 236,090.20 is: 353,669.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,331.80 : 590,720.10 = 236,090.20 : x
  2. Step 2: Convert to fraction form
    394,331.80/590,720.10 = 236,090.20/x
  3. Step 3: Cross multiply
    394,331.80x = 590,720.10 × 236,090.20
  4. Step 4: Simplify right side
    394,331.80x = 139,463,226,553.02
  5. Step 5: Solve for x
    x = 139,463,226,553.02/394,331.80
  6. Step 6: Final answer
    x = 353,669.74

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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.