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Finding the Fourth Proportional to 228,427.71, 342,719.40 and 68,507.52

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Solution

The fourth proportional to 228,427.71, 342,719.40 and 68,507.52 is: 102,784.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,427.71 : 342,719.40 = 68,507.52 : x
  2. Step 2: Convert to fraction form
    228,427.71/342,719.40 = 68,507.52/x
  3. Step 3: Cross multiply
    228,427.71x = 342,719.40 × 68,507.52
  4. Step 4: Simplify right side
    228,427.71x = 23,478,856,149.89
  5. Step 5: Solve for x
    x = 23,478,856,149.89/228,427.71
  6. Step 6: Final answer
    x = 102,784.62

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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.