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Finding the Fourth Proportional to 373,818.43, 515,851.50 and 212,658.40

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Solution

The fourth proportional to 373,818.43, 515,851.50 and 212,658.40 is: 293,458.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,818.43 : 515,851.50 = 212,658.40 : x
  2. Step 2: Convert to fraction form
    373,818.43/515,851.50 = 212,658.40/x
  3. Step 3: Cross multiply
    373,818.43x = 515,851.50 × 212,658.40
  4. Step 4: Simplify right side
    373,818.43x = 109,700,154,627.60
  5. Step 5: Solve for x
    x = 109,700,154,627.60/373,818.43
  6. Step 6: Final answer
    x = 293,458.39

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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.