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Finding the Fourth Proportional to 231,333.60, 347,000.40 and 142,687.20

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Solution

The fourth proportional to 231,333.60, 347,000.40 and 142,687.20 is: 214,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,333.60 : 347,000.40 = 142,687.20 : x
  2. Step 2: Convert to fraction form
    231,333.60/347,000.40 = 142,687.20/x
  3. Step 3: Cross multiply
    231,333.60x = 347,000.40 × 142,687.20
  4. Step 4: Simplify right side
    231,333.60x = 49,512,515,474.88
  5. Step 5: Solve for x
    x = 49,512,515,474.88/231,333.60
  6. Step 6: Final answer
    x = 214,030.80

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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.