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Finding the Fourth Proportional to 279,718.98, 386,040.06 and 170,817.30

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Solution

The fourth proportional to 279,718.98, 386,040.06 and 170,817.30 is: 235,744.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,718.98 : 386,040.06 = 170,817.30 : x
  2. Step 2: Convert to fraction form
    279,718.98/386,040.06 = 170,817.30/x
  3. Step 3: Cross multiply
    279,718.98x = 386,040.06 × 170,817.30
  4. Step 4: Simplify right side
    279,718.98x = 65,942,320,741.04
  5. Step 5: Solve for x
    x = 65,942,320,741.04/279,718.98
  6. Step 6: Final answer
    x = 235,744.89

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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.