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Finding the Fourth Proportional to 373,820.43, 515,854.26 and 212,660.40

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Solution

The fourth proportional to 373,820.43, 515,854.26 and 212,660.40 is: 293,461.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,820.43 : 515,854.26 = 212,660.40 : x
  2. Step 2: Convert to fraction form
    373,820.43/515,854.26 = 212,660.40/x
  3. Step 3: Cross multiply
    373,820.43x = 515,854.26 × 212,660.40
  4. Step 4: Simplify right side
    373,820.43x = 109,701,773,273.30
  5. Step 5: Solve for x
    x = 109,701,773,273.30/373,820.43
  6. Step 6: Final answer
    x = 293,461.15

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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.