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Finding the Fourth Proportional to 353,352.78, 530,029.17 and 143,138.34

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Solution

The fourth proportional to 353,352.78, 530,029.17 and 143,138.34 is: 214,707.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,352.78 : 530,029.17 = 143,138.34 : x
  2. Step 2: Convert to fraction form
    353,352.78/530,029.17 = 143,138.34/x
  3. Step 3: Cross multiply
    353,352.78x = 530,029.17 × 143,138.34
  4. Step 4: Simplify right side
    353,352.78x = 75,867,495,545.38
  5. Step 5: Solve for x
    x = 75,867,495,545.38/353,352.78
  6. Step 6: Final answer
    x = 214,707.51

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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.