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Finding the Fourth Proportional to 426,865.38, 640,323.12 and 160,628.19

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Solution

The fourth proportional to 426,865.38, 640,323.12 and 160,628.19 is: 240,951.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,865.38 : 640,323.12 = 160,628.19 : x
  2. Step 2: Convert to fraction form
    426,865.38/640,323.12 = 160,628.19/x
  3. Step 3: Cross multiply
    426,865.38x = 640,323.12 × 160,628.19
  4. Step 4: Simplify right side
    426,865.38x = 102,853,943,780.75
  5. Step 5: Solve for x
    x = 102,853,943,780.75/426,865.38
  6. Step 6: Final answer
    x = 240,951.71

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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.