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Finding the Fourth Proportional to 373,889.91, 515,950.22 and 212,729.88

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Solution

The fourth proportional to 373,889.91, 515,950.22 and 212,729.88 is: 293,557.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,889.91 : 515,950.22 = 212,729.88 : x
  2. Step 2: Convert to fraction form
    373,889.91/515,950.22 = 212,729.88/x
  3. Step 3: Cross multiply
    373,889.91x = 515,950.22 × 212,729.88
  4. Step 4: Simplify right side
    373,889.91x = 109,758,028,386.57
  5. Step 5: Solve for x
    x = 109,758,028,386.57/373,889.91
  6. Step 6: Final answer
    x = 293,557.08

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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.