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Finding the Fourth Proportional to 571,077.64, 856,013.67 and 191,638.61

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Solution

The fourth proportional to 571,077.64, 856,013.67 and 191,638.61 is: 287,255.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,077.64 : 856,013.67 = 191,638.61 : x
  2. Step 2: Convert to fraction form
    571,077.64/856,013.67 = 191,638.61/x
  3. Step 3: Cross multiply
    571,077.64x = 856,013.67 × 191,638.61
  4. Step 4: Simplify right side
    571,077.64x = 164,045,268,789.78
  5. Step 5: Solve for x
    x = 164,045,268,789.78/571,077.64
  6. Step 6: Final answer
    x = 287,255.63

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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.