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Finding the Fourth Proportional to 426,552.82, 640,222.83 and 216,338.38

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Solution

The fourth proportional to 426,552.82, 640,222.83 and 216,338.38 is: 324,707.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,552.82 : 640,222.83 = 216,338.38 : x
  2. Step 2: Convert to fraction form
    426,552.82/640,222.83 = 216,338.38/x
  3. Step 3: Cross multiply
    426,552.82x = 640,222.83 × 216,338.38
  4. Step 4: Simplify right side
    426,552.82x = 138,504,769,881.22
  5. Step 5: Solve for x
    x = 138,504,769,881.22/426,552.82
  6. Step 6: Final answer
    x = 324,707.20

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1.5x scale

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.