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Finding the Fourth Proportional to 277,022.81, 415,534.20 and 66,660.77

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Solution

The fourth proportional to 277,022.81, 415,534.20 and 66,660.77 is: 99,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,022.81 : 415,534.20 = 66,660.77 : x
  2. Step 2: Convert to fraction form
    277,022.81/415,534.20 = 66,660.77/x
  3. Step 3: Cross multiply
    277,022.81x = 415,534.20 × 66,660.77
  4. Step 4: Simplify right side
    277,022.81x = 27,699,829,733.33
  5. Step 5: Solve for x
    x = 27,699,829,733.33/277,022.81
  6. Step 6: Final answer
    x = 99,991.15

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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.