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Finding the Fourth Proportional to 231,999.40, 347,999.10 and 130,522.60

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Solution

The fourth proportional to 231,999.40, 347,999.10 and 130,522.60 is: 195,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,999.40 : 347,999.10 = 130,522.60 : x
  2. Step 2: Convert to fraction form
    231,999.40/347,999.10 = 130,522.60/x
  3. Step 3: Cross multiply
    231,999.40x = 347,999.10 × 130,522.60
  4. Step 4: Simplify right side
    231,999.40x = 45,421,747,329.66
  5. Step 5: Solve for x
    x = 45,421,747,329.66/231,999.40
  6. Step 6: Final answer
    x = 195,783.90

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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.