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Finding the Fourth Proportional to 343,881.80, 515,822.70 and 107,222.60

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Solution

The fourth proportional to 343,881.80, 515,822.70 and 107,222.60 is: 160,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,881.80 : 515,822.70 = 107,222.60 : x
  2. Step 2: Convert to fraction form
    343,881.80/515,822.70 = 107,222.60/x
  3. Step 3: Cross multiply
    343,881.80x = 515,822.70 × 107,222.60
  4. Step 4: Simplify right side
    343,881.80x = 55,307,851,033.02
  5. Step 5: Solve for x
    x = 55,307,851,033.02/343,881.80
  6. Step 6: Final answer
    x = 160,833.90

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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.