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Finding the Fourth Proportional to 398,376.80, 597,550.80 and 161,712.80

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Solution

The fourth proportional to 398,376.80, 597,550.80 and 161,712.80 is: 242,563.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,376.80 : 597,550.80 = 161,712.80 : x
  2. Step 2: Convert to fraction form
    398,376.80/597,550.80 = 161,712.80/x
  3. Step 3: Cross multiply
    398,376.80x = 597,550.80 × 161,712.80
  4. Step 4: Simplify right side
    398,376.80x = 96,631,613,010.24
  5. Step 5: Solve for x
    x = 96,631,613,010.24/398,376.80
  6. Step 6: Final answer
    x = 242,563.35

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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.