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Finding the Fourth Proportional to 231,615.34, 347,430.03 and 79,810.54

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Solution

The fourth proportional to 231,615.34, 347,430.03 and 79,810.54 is: 119,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,615.34 : 347,430.03 = 79,810.54 : x
  2. Step 2: Convert to fraction form
    231,615.34/347,430.03 = 79,810.54/x
  3. Step 3: Cross multiply
    231,615.34x = 347,430.03 × 79,810.54
  4. Step 4: Simplify right side
    231,615.34x = 27,728,578,306.52
  5. Step 5: Solve for x
    x = 27,728,578,306.52/231,615.34
  6. Step 6: Final answer
    x = 119,718.23

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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.