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Finding the Fourth Proportional to 345,351.28, 517,890.72 and 167,805.76

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Solution

The fourth proportional to 345,351.28, 517,890.72 and 167,805.76 is: 251,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,351.28 : 517,890.72 = 167,805.76 : x
  2. Step 2: Convert to fraction form
    345,351.28/517,890.72 = 167,805.76/x
  3. Step 3: Cross multiply
    345,351.28x = 517,890.72 × 167,805.76
  4. Step 4: Simplify right side
    345,351.28x = 86,905,045,866.55
  5. Step 5: Solve for x
    x = 86,905,045,866.55/345,351.28
  6. Step 6: Final answer
    x = 251,642.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.