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Finding the Fourth Proportional to 347,612.10, 521,418.15 and 214,059.30

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Solution

The fourth proportional to 347,612.10, 521,418.15 and 214,059.30 is: 321,088.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,612.10 : 521,418.15 = 214,059.30 : x
  2. Step 2: Convert to fraction form
    347,612.10/521,418.15 = 214,059.30/x
  3. Step 3: Cross multiply
    347,612.10x = 521,418.15 × 214,059.30
  4. Step 4: Simplify right side
    347,612.10x = 111,614,404,196.30
  5. Step 5: Solve for x
    x = 111,614,404,196.30/347,612.10
  6. Step 6: Final answer
    x = 321,088.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.