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Finding the Fourth Proportional to 426,850.12, 640,372.38 and 146,350.36

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Solution

The fourth proportional to 426,850.12, 640,372.38 and 146,350.36 is: 219,558.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,850.12 : 640,372.38 = 146,350.36 : x
  2. Step 2: Convert to fraction form
    426,850.12/640,372.38 = 146,350.36/x
  3. Step 3: Cross multiply
    426,850.12x = 640,372.38 × 146,350.36
  4. Step 4: Simplify right side
    426,850.12x = 93,718,728,347.06
  5. Step 5: Solve for x
    x = 93,718,728,347.06/426,850.12
  6. Step 6: Final answer
    x = 219,558.87

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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.