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Finding the Fourth Proportional to 347,071.20, 519,829.20 and 207,103.20

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Solution

The fourth proportional to 347,071.20, 519,829.20 and 207,103.20 is: 310,190.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,071.20 : 519,829.20 = 207,103.20 : x
  2. Step 2: Convert to fraction form
    347,071.20/519,829.20 = 207,103.20/x
  3. Step 3: Cross multiply
    347,071.20x = 519,829.20 × 207,103.20
  4. Step 4: Simplify right side
    347,071.20x = 107,658,290,773.44
  5. Step 5: Solve for x
    x = 107,658,290,773.44/347,071.20
  6. Step 6: Final answer
    x = 310,190.79

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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.