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Finding the Fourth Proportional to 571,318.81, 856,709.62 and 211,240.88

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Solution

The fourth proportional to 571,318.81, 856,709.62 and 211,240.88 is: 316,762.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,318.81 : 856,709.62 = 211,240.88 : x
  2. Step 2: Convert to fraction form
    571,318.81/856,709.62 = 211,240.88/x
  3. Step 3: Cross multiply
    571,318.81x = 856,709.62 × 211,240.88
  4. Step 4: Simplify right side
    571,318.81x = 180,972,094,033.27
  5. Step 5: Solve for x
    x = 180,972,094,033.27/571,318.81
  6. Step 6: Final answer
    x = 316,762.01

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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.