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Finding the Fourth Proportional to 228,511.58, 315,308.43 and 143,568.50

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Solution

The fourth proportional to 228,511.58, 315,308.43 and 143,568.50 is: 198,100.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,511.58 : 315,308.43 = 143,568.50 : x
  2. Step 2: Convert to fraction form
    228,511.58/315,308.43 = 143,568.50/x
  3. Step 3: Cross multiply
    228,511.58x = 315,308.43 × 143,568.50
  4. Step 4: Simplify right side
    228,511.58x = 45,268,358,332.46
  5. Step 5: Solve for x
    x = 45,268,358,332.46/228,511.58
  6. Step 6: Final answer
    x = 198,100.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.