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Finding the Fourth Proportional to 275,365.80, 412,530.30 and 141,791.40

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Solution

The fourth proportional to 275,365.80, 412,530.30 and 141,791.40 is: 212,420.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,365.80 : 412,530.30 = 141,791.40 : x
  2. Step 2: Convert to fraction form
    275,365.80/412,530.30 = 141,791.40/x
  3. Step 3: Cross multiply
    275,365.80x = 412,530.30 × 141,791.40
  4. Step 4: Simplify right side
    275,365.80x = 58,493,248,779.42
  5. Step 5: Solve for x
    x = 58,493,248,779.42/275,365.80
  6. Step 6: Final answer
    x = 212,420.17

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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.