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Finding the Fourth Proportional to 356,331.54, 491,551.09 and 220,322.01

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Solution

The fourth proportional to 356,331.54, 491,551.09 and 220,322.01 is: 303,929.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,331.54 : 491,551.09 = 220,322.01 : x
  2. Step 2: Convert to fraction form
    356,331.54/491,551.09 = 220,322.01/x
  3. Step 3: Cross multiply
    356,331.54x = 491,551.09 × 220,322.01
  4. Step 4: Simplify right side
    356,331.54x = 108,299,524,166.49
  5. Step 5: Solve for x
    x = 108,299,524,166.49/356,331.54
  6. Step 6: Final answer
    x = 303,929.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.