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Finding the Fourth Proportional to 477,120.85, 715,680.81 and 122,134.30

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Solution

The fourth proportional to 477,120.85, 715,680.81 and 122,134.30 is: 183,201.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,120.85 : 715,680.81 = 122,134.30 : x
  2. Step 2: Convert to fraction form
    477,120.85/715,680.81 = 122,134.30/x
  3. Step 3: Cross multiply
    477,120.85x = 715,680.81 × 122,134.30
  4. Step 4: Simplify right side
    477,120.85x = 87,409,174,752.78
  5. Step 5: Solve for x
    x = 87,409,174,752.78/477,120.85
  6. Step 6: Final answer
    x = 183,201.33

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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.