Home / 399,103.30-550,516.26-284,418.69

Finding the Fourth Proportional to 399,103.30, 550,516.26 and 284,418.69

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Solution

The fourth proportional to 399,103.30, 550,516.26 and 284,418.69 is: 392,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,103.30 : 550,516.26 = 284,418.69 : x
  2. Step 2: Convert to fraction form
    399,103.30/550,516.26 = 284,418.69/x
  3. Step 3: Cross multiply
    399,103.30x = 550,516.26 × 284,418.69
  4. Step 4: Simplify right side
    399,103.30x = 156,577,115,591.69
  5. Step 5: Solve for x
    x = 156,577,115,591.69/399,103.30
  6. Step 6: Final answer
    x = 392,322.28

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1.5x scale

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.