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Finding the Fourth Proportional to 277,135.42, 415,573.92 and 143,979.93

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Solution

The fourth proportional to 277,135.42, 415,573.92 and 143,979.93 is: 215,902.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,135.42 : 415,573.92 = 143,979.93 : x
  2. Step 2: Convert to fraction form
    277,135.42/415,573.92 = 143,979.93/x
  3. Step 3: Cross multiply
    277,135.42x = 415,573.92 × 143,979.93
  4. Step 4: Simplify right side
    277,135.42x = 59,834,302,892.95
  5. Step 5: Solve for x
    x = 59,834,302,892.95/277,135.42
  6. Step 6: Final answer
    x = 215,902.76

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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.