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Finding the Fourth Proportional to 373,483.64, 515,392.50 and 220,571.10

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Solution

The fourth proportional to 373,483.64, 515,392.50 and 220,571.10 is: 304,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,483.64 : 515,392.50 = 220,571.10 : x
  2. Step 2: Convert to fraction form
    373,483.64/515,392.50 = 220,571.10/x
  3. Step 3: Cross multiply
    373,483.64x = 515,392.50 × 220,571.10
  4. Step 4: Simplify right side
    373,483.64x = 113,680,690,656.75
  5. Step 5: Solve for x
    x = 113,680,690,656.75/373,483.64
  6. Step 6: Final answer
    x = 304,379.31

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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.