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Finding the Fourth Proportional to 373,528.82, 515,494.13 and 212,398.86

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Solution

The fourth proportional to 373,528.82, 515,494.13 and 212,398.86 is: 293,124.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,528.82 : 515,494.13 = 212,398.86 : x
  2. Step 2: Convert to fraction form
    373,528.82/515,494.13 = 212,398.86/x
  3. Step 3: Cross multiply
    373,528.82x = 515,494.13 × 212,398.86
  4. Step 4: Simplify right side
    373,528.82x = 109,490,363,520.15
  5. Step 5: Solve for x
    x = 109,490,363,520.15/373,528.82
  6. Step 6: Final answer
    x = 293,124.27

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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.