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Finding the Fourth Proportional to 394,276.80, 590,637.60 and 236,035.20

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Solution

The fourth proportional to 394,276.80, 590,637.60 and 236,035.20 is: 353,587.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,276.80 : 590,637.60 = 236,035.20 : x
  2. Step 2: Convert to fraction form
    394,276.80/590,637.60 = 236,035.20/x
  3. Step 3: Cross multiply
    394,276.80x = 590,637.60 × 236,035.20
  4. Step 4: Simplify right side
    394,276.80x = 139,411,264,043.52
  5. Step 5: Solve for x
    x = 139,411,264,043.52/394,276.80
  6. Step 6: Final answer
    x = 353,587.29

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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.