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Finding the Fourth Proportional to 373,479.07, 515,401.11 and 203,713.20

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Solution

The fourth proportional to 373,479.07, 515,401.11 and 203,713.20 is: 281,124.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,479.07 : 515,401.11 = 203,713.20 : x
  2. Step 2: Convert to fraction form
    373,479.07/515,401.11 = 203,713.20/x
  3. Step 3: Cross multiply
    373,479.07x = 515,401.11 × 203,713.20
  4. Step 4: Simplify right side
    373,479.07x = 104,994,009,401.65
  5. Step 5: Solve for x
    x = 104,994,009,401.65/373,479.07
  6. Step 6: Final answer
    x = 281,124.21

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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.