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Finding the Fourth Proportional to 384,879.77, 531,124.71 and 212,793.29

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Solution

The fourth proportional to 384,879.77, 531,124.71 and 212,793.29 is: 293,649.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,879.77 : 531,124.71 = 212,793.29 : x
  2. Step 2: Convert to fraction form
    384,879.77/531,124.71 = 212,793.29/x
  3. Step 3: Cross multiply
    384,879.77x = 531,124.71 × 212,793.29
  4. Step 4: Simplify right side
    384,879.77x = 113,019,774,441.20
  5. Step 5: Solve for x
    x = 113,019,774,441.20/384,879.77
  6. Step 6: Final answer
    x = 293,649.56

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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.