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Finding the Fourth Proportional to 228,609.17, 342,900.57 and 68,681.68

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Solution

The fourth proportional to 228,609.17, 342,900.57 and 68,681.68 is: 103,018.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,609.17 : 342,900.57 = 68,681.68 : x
  2. Step 2: Convert to fraction form
    228,609.17/342,900.57 = 68,681.68/x
  3. Step 3: Cross multiply
    228,609.17x = 342,900.57 × 68,681.68
  4. Step 4: Simplify right side
    228,609.17x = 23,550,987,220.56
  5. Step 5: Solve for x
    x = 23,550,987,220.56/228,609.17
  6. Step 6: Final answer
    x = 103,018.56

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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.