Home / 308,619.18-425,884.68-172,655.51

Finding the Fourth Proportional to 308,619.18, 425,884.68 and 172,655.51

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Solution

The fourth proportional to 308,619.18, 425,884.68 and 172,655.51 is: 238,259.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,619.18 : 425,884.68 = 172,655.51 : x
  2. Step 2: Convert to fraction form
    308,619.18/425,884.68 = 172,655.51/x
  3. Step 3: Cross multiply
    308,619.18x = 425,884.68 × 172,655.51
  4. Step 4: Simplify right side
    308,619.18x = 73,531,334,497.16
  5. Step 5: Solve for x
    x = 73,531,334,497.16/308,619.18
  6. Step 6: Final answer
    x = 238,259.12

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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.