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Finding the Fourth Proportional to 342,996.20, 514,278.30 and 143,455.40

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Solution

The fourth proportional to 342,996.20, 514,278.30 and 143,455.40 is: 215,092.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,996.20 : 514,278.30 = 143,455.40 : x
  2. Step 2: Convert to fraction form
    342,996.20/514,278.30 = 143,455.40/x
  3. Step 3: Cross multiply
    342,996.20x = 514,278.30 × 143,455.40
  4. Step 4: Simplify right side
    342,996.20x = 73,775,999,237.82
  5. Step 5: Solve for x
    x = 73,775,999,237.82/342,996.20
  6. Step 6: Final answer
    x = 215,092.76

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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.