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Finding the Fourth Proportional to 279,892.18, 386,236.63 and 159,016.69

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Solution

The fourth proportional to 279,892.18, 386,236.63 and 159,016.69 is: 219,434.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,892.18 : 386,236.63 = 159,016.69 : x
  2. Step 2: Convert to fraction form
    279,892.18/386,236.63 = 159,016.69/x
  3. Step 3: Cross multiply
    279,892.18x = 386,236.63 × 159,016.69
  4. Step 4: Simplify right side
    279,892.18x = 61,418,070,459.35
  5. Step 5: Solve for x
    x = 61,418,070,459.35/279,892.18
  6. Step 6: Final answer
    x = 219,434.75

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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.