Home / 215,651,306.08-323,147,798.80-128,040,299.28

Finding the Fourth Proportional to 215,651,306.08, 323,147,798.80 and 128,040,299.28

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Solution

The fourth proportional to 215,651,306.08, 323,147,798.80 and 128,040,299.28 is: 191,865,014.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,651,306.08 : 323,147,798.80 = 128,040,299.28 : x
  2. Step 2: Convert to fraction form
    215,651,306.08/323,147,798.80 = 128,040,299.28/x
  3. Step 3: Cross multiply
    215,651,306.08x = 323,147,798.80 × 128,040,299.28
  4. Step 4: Simplify right side
    215,651,306.08x = 41,375,940,870,025,224
  5. Step 5: Solve for x
    x = 41,375,940,870,025,224/215,651,306.08
  6. Step 6: Final answer
    x = 191,865,014.05

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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.