Home / 308,123.28-425,208.96-172,169.64

Finding the Fourth Proportional to 308,123.28, 425,208.96 and 172,169.64

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Solution

The fourth proportional to 308,123.28, 425,208.96 and 172,169.64 is: 237,593.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,123.28 : 425,208.96 = 172,169.64 : x
  2. Step 2: Convert to fraction form
    308,123.28/425,208.96 = 172,169.64/x
  3. Step 3: Cross multiply
    308,123.28x = 425,208.96 × 172,169.64
  4. Step 4: Simplify right side
    308,123.28x = 73,208,073,567.97
  5. Step 5: Solve for x
    x = 73,208,073,567.97/308,123.28
  6. Step 6: Final answer
    x = 237,593.45

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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.