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Finding the Fourth Proportional to 571,356.72, 856,430.83 and 211,296.22

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Solution

The fourth proportional to 571,356.72, 856,430.83 and 211,296.22 is: 316,720.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,356.72 : 856,430.83 = 211,296.22 : x
  2. Step 2: Convert to fraction form
    571,356.72/856,430.83 = 211,296.22/x
  3. Step 3: Cross multiply
    571,356.72x = 856,430.83 × 211,296.22
  4. Step 4: Simplify right side
    571,356.72x = 180,960,591,731.83
  5. Step 5: Solve for x
    x = 180,960,591,731.83/571,356.72
  6. Step 6: Final answer
    x = 316,720.86

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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.