Home / 310,261.96-428,167.28-172,453.79

Finding the Fourth Proportional to 310,261.96, 428,167.28 and 172,453.79

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Solution

The fourth proportional to 310,261.96, 428,167.28 and 172,453.79 is: 237,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,261.96 : 428,167.28 = 172,453.79 : x
  2. Step 2: Convert to fraction form
    310,261.96/428,167.28 = 172,453.79/x
  3. Step 3: Cross multiply
    310,261.96x = 428,167.28 × 172,453.79
  4. Step 4: Simplify right side
    310,261.96x = 73,839,071,691.54
  5. Step 5: Solve for x
    x = 73,839,071,691.54/310,261.96
  6. Step 6: Final answer
    x = 237,989.44

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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.