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Finding the Fourth Proportional to 231,570.40, 347,355.60 and 229,112.80

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Solution

The fourth proportional to 231,570.40, 347,355.60 and 229,112.80 is: 343,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,570.40 : 347,355.60 = 229,112.80 : x
  2. Step 2: Convert to fraction form
    231,570.40/347,355.60 = 229,112.80/x
  3. Step 3: Cross multiply
    231,570.40x = 347,355.60 × 229,112.80
  4. Step 4: Simplify right side
    231,570.40x = 79,583,614,111.68
  5. Step 5: Solve for x
    x = 79,583,614,111.68/231,570.40
  6. Step 6: Final answer
    x = 343,669.20

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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.