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Finding the Fourth Proportional to 398,666.44, 550,209.36 and 228,896.92

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Solution

The fourth proportional to 398,666.44, 550,209.36 and 228,896.92 is: 315,906.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,666.44 : 550,209.36 = 228,896.92 : x
  2. Step 2: Convert to fraction form
    398,666.44/550,209.36 = 228,896.92/x
  3. Step 3: Cross multiply
    398,666.44x = 550,209.36 × 228,896.92
  4. Step 4: Simplify right side
    398,666.44x = 125,941,227,859.17
  5. Step 5: Solve for x
    x = 125,941,227,859.17/398,666.44
  6. Step 6: Final answer
    x = 315,906.27

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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.