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Finding the Fourth Proportional to 437,633.60, 656,440.80 and 122,081.60

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Solution

The fourth proportional to 437,633.60, 656,440.80 and 122,081.60 is: 183,119.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,633.60 : 656,440.80 = 122,081.60 : x
  2. Step 2: Convert to fraction form
    437,633.60/656,440.80 = 122,081.60/x
  3. Step 3: Cross multiply
    437,633.60x = 656,440.80 × 122,081.60
  4. Step 4: Simplify right side
    437,633.60x = 80,139,343,169.28
  5. Step 5: Solve for x
    x = 80,139,343,169.28/437,633.60
  6. Step 6: Final answer
    x = 183,119.72

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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.