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Finding the Fourth Proportional to 354,328.78, 531,317.94 and 154,562.80

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Solution

The fourth proportional to 354,328.78, 531,317.94 and 154,562.80 is: 231,767.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,328.78 : 531,317.94 = 154,562.80 : x
  2. Step 2: Convert to fraction form
    354,328.78/531,317.94 = 154,562.80/x
  3. Step 3: Cross multiply
    354,328.78x = 531,317.94 × 154,562.80
  4. Step 4: Simplify right side
    354,328.78x = 82,121,988,496.63
  5. Step 5: Solve for x
    x = 82,121,988,496.63/354,328.78
  6. Step 6: Final answer
    x = 231,767.76

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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.