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Finding the Fourth Proportional to 373,799.91, 515,774.88 and 212,645.55

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Solution

The fourth proportional to 373,799.91, 515,774.88 and 212,645.55 is: 293,411.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,799.91 : 515,774.88 = 212,645.55 : x
  2. Step 2: Convert to fraction form
    373,799.91/515,774.88 = 212,645.55/x
  3. Step 3: Cross multiply
    373,799.91x = 515,774.88 × 212,645.55
  4. Step 4: Simplify right side
    373,799.91x = 109,677,233,033.78
  5. Step 5: Solve for x
    x = 109,677,233,033.78/373,799.91
  6. Step 6: Final answer
    x = 293,411.61

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1.5x scale

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.