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Finding the Fourth Proportional to 306,578.66, 423,069.90 and 170,610.44

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Solution

The fourth proportional to 306,578.66, 423,069.90 and 170,610.44 is: 235,437.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,578.66 : 423,069.90 = 170,610.44 : x
  2. Step 2: Convert to fraction form
    306,578.66/423,069.90 = 170,610.44/x
  3. Step 3: Cross multiply
    306,578.66x = 423,069.90 × 170,610.44
  4. Step 4: Simplify right side
    306,578.66x = 72,180,141,789.76
  5. Step 5: Solve for x
    x = 72,180,141,789.76/306,578.66
  6. Step 6: Final answer
    x = 235,437.59

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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.