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Finding the Fourth Proportional to 308,309.82, 425,479.95 and 179,247.66

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Solution

The fourth proportional to 308,309.82, 425,479.95 and 179,247.66 is: 247,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,309.82 : 425,479.95 = 179,247.66 : x
  2. Step 2: Convert to fraction form
    308,309.82/425,479.95 = 179,247.66/x
  3. Step 3: Cross multiply
    308,309.82x = 425,479.95 × 179,247.66
  4. Step 4: Simplify right side
    308,309.82x = 76,266,285,414.42
  5. Step 5: Solve for x
    x = 76,266,285,414.42/308,309.82
  6. Step 6: Final answer
    x = 247,368.98

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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.