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Finding the Fourth Proportional to 343,143.05, 514,783.37 and 118,511.72

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Solution

The fourth proportional to 343,143.05, 514,783.37 and 118,511.72 is: 177,791.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,143.05 : 514,783.37 = 118,511.72 : x
  2. Step 2: Convert to fraction form
    343,143.05/514,783.37 = 118,511.72/x
  3. Step 3: Cross multiply
    343,143.05x = 514,783.37 × 118,511.72
  4. Step 4: Simplify right side
    343,143.05x = 61,007,864,189.33
  5. Step 5: Solve for x
    x = 61,007,864,189.33/343,143.05
  6. Step 6: Final answer
    x = 177,791.34

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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.