Home / 384,813.20-531,040.64-215,047.28

Finding the Fourth Proportional to 384,813.20, 531,040.64 and 215,047.28

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Solution

The fourth proportional to 384,813.20, 531,040.64 and 215,047.28 is: 296,764.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,813.20 : 531,040.64 = 215,047.28 : x
  2. Step 2: Convert to fraction form
    384,813.20/531,040.64 = 215,047.28/x
  3. Step 3: Cross multiply
    384,813.20x = 531,040.64 × 215,047.28
  4. Step 4: Simplify right side
    384,813.20x = 114,198,845,201.46
  5. Step 5: Solve for x
    x = 114,198,845,201.46/384,813.20
  6. Step 6: Final answer
    x = 296,764.37

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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.