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Finding the Fourth Proportional to 571,004.40, 856,520.28 and 191,930.64

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Solution

The fourth proportional to 571,004.40, 856,520.28 and 191,930.64 is: 287,900.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,004.40 : 856,520.28 = 191,930.64 : x
  2. Step 2: Convert to fraction form
    571,004.40/856,520.28 = 191,930.64/x
  3. Step 3: Cross multiply
    571,004.40x = 856,520.28 × 191,930.64
  4. Step 4: Simplify right side
    571,004.40x = 164,392,485,513.38
  5. Step 5: Solve for x
    x = 164,392,485,513.38/571,004.40
  6. Step 6: Final answer
    x = 287,900.56

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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.