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Finding the Fourth Proportional to 209,230.48, 313,664.28 and 84,490.48

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Solution

The fourth proportional to 209,230.48, 313,664.28 and 84,490.48 is: 126,662.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,230.48 : 313,664.28 = 84,490.48 : x
  2. Step 2: Convert to fraction form
    209,230.48/313,664.28 = 84,490.48/x
  3. Step 3: Cross multiply
    209,230.48x = 313,664.28 × 84,490.48
  4. Step 4: Simplify right side
    209,230.48x = 26,501,645,576.05
  5. Step 5: Solve for x
    x = 26,501,645,576.05/209,230.48
  6. Step 6: Final answer
    x = 126,662.45

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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.