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Finding the Fourth Proportional to 231,415.84, 347,131.40 and 79,611.40

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Solution

The fourth proportional to 231,415.84, 347,131.40 and 79,611.40 is: 119,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,415.84 : 347,131.40 = 79,611.40 : x
  2. Step 2: Convert to fraction form
    231,415.84/347,131.40 = 79,611.40/x
  3. Step 3: Cross multiply
    231,415.84x = 347,131.40 × 79,611.40
  4. Step 4: Simplify right side
    231,415.84x = 27,635,616,737.96
  5. Step 5: Solve for x
    x = 27,635,616,737.96/231,415.84
  6. Step 6: Final answer
    x = 119,419.73

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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.