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Finding the Fourth Proportional to 279,649.92, 386,464.32 and 248,545.92

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Solution

The fourth proportional to 279,649.92, 386,464.32 and 248,545.92 is: 343,479.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,649.92 : 386,464.32 = 248,545.92 : x
  2. Step 2: Convert to fraction form
    279,649.92/386,464.32 = 248,545.92/x
  3. Step 3: Cross multiply
    279,649.92x = 386,464.32 × 248,545.92
  4. Step 4: Simplify right side
    279,649.92x = 96,054,129,961.57
  5. Step 5: Solve for x
    x = 96,054,129,961.57/279,649.92
  6. Step 6: Final answer
    x = 343,479.91

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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.