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Finding the Fourth Proportional to 426,871.46, 640,332.22 and 160,634.28

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Solution

The fourth proportional to 426,871.46, 640,332.22 and 160,634.28 is: 240,960.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,871.46 : 640,332.22 = 160,634.28 : x
  2. Step 2: Convert to fraction form
    426,871.46/640,332.22 = 160,634.28/x
  3. Step 3: Cross multiply
    426,871.46x = 640,332.22 × 160,634.28
  4. Step 4: Simplify right side
    426,871.46x = 102,859,305,120.50
  5. Step 5: Solve for x
    x = 102,859,305,120.50/426,871.46
  6. Step 6: Final answer
    x = 240,960.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.