Home / 384,911.20-531,163.20-215,148.16

Finding the Fourth Proportional to 384,911.20, 531,163.20 and 215,148.16

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Solution

The fourth proportional to 384,911.20, 531,163.20 and 215,148.16 is: 296,896.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,911.20 : 531,163.20 = 215,148.16 : x
  2. Step 2: Convert to fraction form
    384,911.20/531,163.20 = 215,148.16/x
  3. Step 3: Cross multiply
    384,911.20x = 531,163.20 × 215,148.16
  4. Step 4: Simplify right side
    384,911.20x = 114,278,785,139.71
  5. Step 5: Solve for x
    x = 114,278,785,139.71/384,911.20
  6. Step 6: Final answer
    x = 296,896.49

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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.