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Finding the Fourth Proportional to 231,806.70, 347,710.05 and 216,060.30

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Solution

The fourth proportional to 231,806.70, 347,710.05 and 216,060.30 is: 324,090.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,806.70 : 347,710.05 = 216,060.30 : x
  2. Step 2: Convert to fraction form
    231,806.70/347,710.05 = 216,060.30/x
  3. Step 3: Cross multiply
    231,806.70x = 347,710.05 × 216,060.30
  4. Step 4: Simplify right side
    231,806.70x = 75,126,337,716.02
  5. Step 5: Solve for x
    x = 75,126,337,716.02/231,806.70
  6. Step 6: Final answer
    x = 324,090.45

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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.