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Finding the Fourth Proportional to 347,072.20, 519,830.70 and 207,104.20

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Solution

The fourth proportional to 347,072.20, 519,830.70 and 207,104.20 is: 310,192.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,072.20 : 519,830.70 = 207,104.20 : x
  2. Step 2: Convert to fraction form
    347,072.20/519,830.70 = 207,104.20/x
  3. Step 3: Cross multiply
    347,072.20x = 519,830.70 × 207,104.20
  4. Step 4: Simplify right side
    347,072.20x = 107,659,121,258.94
  5. Step 5: Solve for x
    x = 107,659,121,258.94/347,072.20
  6. Step 6: Final answer
    x = 310,192.29

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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.