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Finding the Fourth Proportional to 571,211.28, 856,838.52 and 171,908.82

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Solution

The fourth proportional to 571,211.28, 856,838.52 and 171,908.82 is: 257,869.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,211.28 : 856,838.52 = 171,908.82 : x
  2. Step 2: Convert to fraction form
    571,211.28/856,838.52 = 171,908.82/x
  3. Step 3: Cross multiply
    571,211.28x = 856,838.52 × 171,908.82
  4. Step 4: Simplify right side
    571,211.28x = 147,298,098,903.75
  5. Step 5: Solve for x
    x = 147,298,098,903.75/571,211.28
  6. Step 6: Final answer
    x = 257,869.73

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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.