Home / 384,905.32-531,171.30-215,135.80

Finding the Fourth Proportional to 384,905.32, 531,171.30 and 215,135.80

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Solution

The fourth proportional to 384,905.32, 531,171.30 and 215,135.80 is: 296,888.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,905.32 : 531,171.30 = 215,135.80 : x
  2. Step 2: Convert to fraction form
    384,905.32/531,171.30 = 215,135.80/x
  3. Step 3: Cross multiply
    384,905.32x = 531,171.30 × 215,135.80
  4. Step 4: Simplify right side
    384,905.32x = 114,273,962,562.54
  5. Step 5: Solve for x
    x = 114,273,962,562.54/384,905.32
  6. Step 6: Final answer
    x = 296,888.50

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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.