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Finding the Fourth Proportional to 347,299.80, 520,949.70 and 207,331.80

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Solution

The fourth proportional to 347,299.80, 520,949.70 and 207,331.80 is: 310,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,299.80 : 520,949.70 = 207,331.80 : x
  2. Step 2: Convert to fraction form
    347,299.80/520,949.70 = 207,331.80/x
  3. Step 3: Cross multiply
    347,299.80x = 520,949.70 × 207,331.80
  4. Step 4: Simplify right side
    347,299.80x = 108,009,439,010.46
  5. Step 5: Solve for x
    x = 108,009,439,010.46/347,299.80
  6. Step 6: Final answer
    x = 310,997.70

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1.5x scale

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.