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Finding the Fourth Proportional to 373,642.62, 515,638.14 and 212,520.84

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Solution

The fourth proportional to 373,642.62, 515,638.14 and 212,520.84 is: 293,285.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,642.62 : 515,638.14 = 212,520.84 : x
  2. Step 2: Convert to fraction form
    373,642.62/515,638.14 = 212,520.84/x
  3. Step 3: Cross multiply
    373,642.62x = 515,638.14 × 212,520.84
  4. Step 4: Simplify right side
    373,642.62x = 109,583,850,648.84
  5. Step 5: Solve for x
    x = 109,583,850,648.84/373,642.62
  6. Step 6: Final answer
    x = 293,285.20

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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.