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Finding the Fourth Proportional to 347,200.80, 520,801.20 and 207,232.80

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Solution

The fourth proportional to 347,200.80, 520,801.20 and 207,232.80 is: 310,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,200.80 : 520,801.20 = 207,232.80 : x
  2. Step 2: Convert to fraction form
    347,200.80/520,801.20 = 207,232.80/x
  3. Step 3: Cross multiply
    347,200.80x = 520,801.20 × 207,232.80
  4. Step 4: Simplify right side
    347,200.80x = 107,927,090,919.36
  5. Step 5: Solve for x
    x = 107,927,090,919.36/347,200.80
  6. Step 6: Final answer
    x = 310,849.20

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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.