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Finding the Fourth Proportional to 343,641.68, 515,536.68 and 103,735.72

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Solution

The fourth proportional to 343,641.68, 515,536.68 and 103,735.72 is: 155,625.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,641.68 : 515,536.68 = 103,735.72 : x
  2. Step 2: Convert to fraction form
    343,641.68/515,536.68 = 103,735.72/x
  3. Step 3: Cross multiply
    343,641.68x = 515,536.68 × 103,735.72
  4. Step 4: Simplify right side
    343,641.68x = 53,479,568,686.21
  5. Step 5: Solve for x
    x = 53,479,568,686.21/343,641.68
  6. Step 6: Final answer
    x = 155,625.97

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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.