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Finding the Fourth Proportional to 373,638.66, 515,632.73 and 212,516.91

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Solution

The fourth proportional to 373,638.66, 515,632.73 and 212,516.91 is: 293,279.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,638.66 : 515,632.73 = 212,516.91 : x
  2. Step 2: Convert to fraction form
    373,638.66/515,632.73 = 212,516.91/x
  3. Step 3: Cross multiply
    373,638.66x = 515,632.73 × 212,516.91
  4. Step 4: Simplify right side
    373,638.66x = 109,580,673,411.88
  5. Step 5: Solve for x
    x = 109,580,673,411.88/373,638.66
  6. Step 6: Final answer
    x = 293,279.81

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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.