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Finding the Fourth Proportional to 426,551.82, 640,221.33 and 216,337.38

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Solution

The fourth proportional to 426,551.82, 640,221.33 and 216,337.38 is: 324,705.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,551.82 : 640,221.33 = 216,337.38 : x
  2. Step 2: Convert to fraction form
    426,551.82/640,221.33 = 216,337.38/x
  3. Step 3: Cross multiply
    426,551.82x = 640,221.33 × 216,337.38
  4. Step 4: Simplify right side
    426,551.82x = 138,503,805,152.32
  5. Step 5: Solve for x
    x = 138,503,805,152.32/426,551.82
  6. Step 6: Final answer
    x = 324,705.69

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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.