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Finding the Fourth Proportional to 308,150.66, 425,250 and 172,190.34

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Solution

The fourth proportional to 308,150.66, 425,250 and 172,190.34 is: 237,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,150.66 : 425,250 = 172,190.34 : x
  2. Step 2: Convert to fraction form
    308,150.66/425,250 = 172,190.34/x
  3. Step 3: Cross multiply
    308,150.66x = 425,250 × 172,190.34
  4. Step 4: Simplify right side
    308,150.66x = 73,223,942,085
  5. Step 5: Solve for x
    x = 73,223,942,085/308,150.66
  6. Step 6: Final answer
    x = 237,623.84

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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.