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Finding the Fourth Proportional to 313,219.25, 432,242.88 and 169,979.33

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Solution

The fourth proportional to 313,219.25, 432,242.88 and 169,979.33 is: 234,571.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,219.25 : 432,242.88 = 169,979.33 : x
  2. Step 2: Convert to fraction form
    313,219.25/432,242.88 = 169,979.33/x
  3. Step 3: Cross multiply
    313,219.25x = 432,242.88 × 169,979.33
  4. Step 4: Simplify right side
    313,219.25x = 73,472,352,128.56
  5. Step 5: Solve for x
    x = 73,472,352,128.56/313,219.25
  6. Step 6: Final answer
    x = 234,571.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.