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Finding the Fourth Proportional to 215,315.62, 323,021.77 and 65,567.73

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Solution

The fourth proportional to 215,315.62, 323,021.77 and 65,567.73 is: 98,366.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,315.62 : 323,021.77 = 65,567.73 : x
  2. Step 2: Convert to fraction form
    215,315.62/323,021.77 = 65,567.73/x
  3. Step 3: Cross multiply
    215,315.62x = 323,021.77 × 65,567.73
  4. Step 4: Simplify right side
    215,315.62x = 21,179,803,798.72
  5. Step 5: Solve for x
    x = 21,179,803,798.72/215,315.62
  6. Step 6: Final answer
    x = 98,366.31

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1.5x scale

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.