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Finding the Fourth Proportional to 571,318.56, 856,709.25 and 211,240.63

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Solution

The fourth proportional to 571,318.56, 856,709.25 and 211,240.63 is: 316,761.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,318.56 : 856,709.25 = 211,240.63 : x
  2. Step 2: Convert to fraction form
    571,318.56/856,709.25 = 211,240.63/x
  3. Step 3: Cross multiply
    571,318.56x = 856,709.25 × 211,240.63
  4. Step 4: Simplify right side
    571,318.56x = 180,971,801,696.83
  5. Step 5: Solve for x
    x = 180,971,801,696.83/571,318.56
  6. Step 6: Final answer
    x = 316,761.64

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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.