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Finding the Fourth Proportional to 373,990.02, 516,105.78 and 221,083.32

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Solution

The fourth proportional to 373,990.02, 516,105.78 and 221,083.32 is: 305,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,990.02 : 516,105.78 = 221,083.32 : x
  2. Step 2: Convert to fraction form
    373,990.02/516,105.78 = 221,083.32/x
  3. Step 3: Cross multiply
    373,990.02x = 516,105.78 × 221,083.32
  4. Step 4: Simplify right side
    373,990.02x = 114,102,379,313.59
  5. Step 5: Solve for x
    x = 114,102,379,313.59/373,990.02
  6. Step 6: Final answer
    x = 305,094.72

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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.