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Finding the Fourth Proportional to 570,107.97, 855,390.38 and 215,222.67

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Solution

The fourth proportional to 570,107.97, 855,390.38 and 215,222.67 is: 322,920.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,107.97 : 855,390.38 = 215,222.67 : x
  2. Step 2: Convert to fraction form
    570,107.97/855,390.38 = 215,222.67/x
  3. Step 3: Cross multiply
    570,107.97x = 855,390.38 × 215,222.67
  4. Step 4: Simplify right side
    570,107.97x = 184,099,400,399.80
  5. Step 5: Solve for x
    x = 184,099,400,399.80/570,107.97
  6. Step 6: Final answer
    x = 322,920.24

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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.