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Finding the Fourth Proportional to 277,420.88, 415,796.69 and 135,052.79

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Solution

The fourth proportional to 277,420.88, 415,796.69 and 135,052.79 is: 202,416.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,420.88 : 415,796.69 = 135,052.79 : x
  2. Step 2: Convert to fraction form
    277,420.88/415,796.69 = 135,052.79/x
  3. Step 3: Cross multiply
    277,420.88x = 415,796.69 × 135,052.79
  4. Step 4: Simplify right side
    277,420.88x = 56,154,501,315.91
  5. Step 5: Solve for x
    x = 56,154,501,315.91/277,420.88
  6. Step 6: Final answer
    x = 202,416.27

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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.