Home / 308,128.96-425,215.02-172,186.33

Finding the Fourth Proportional to 308,128.96, 425,215.02 and 172,186.33

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Solution

The fourth proportional to 308,128.96, 425,215.02 and 172,186.33 is: 237,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,128.96 : 425,215.02 = 172,186.33 : x
  2. Step 2: Convert to fraction form
    308,128.96/425,215.02 = 172,186.33/x
  3. Step 3: Cross multiply
    308,128.96x = 425,215.02 × 172,186.33
  4. Step 4: Simplify right side
    308,128.96x = 73,216,213,754.68
  5. Step 5: Solve for x
    x = 73,216,213,754.68/308,128.96
  6. Step 6: Final answer
    x = 237,615.49

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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.