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Finding the Fourth Proportional to 347,039.08, 520,620.36 and 122,529.86

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Solution

The fourth proportional to 347,039.08, 520,620.36 and 122,529.86 is: 183,816.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,039.08 : 520,620.36 = 122,529.86 : x
  2. Step 2: Convert to fraction form
    347,039.08/520,620.36 = 122,529.86/x
  3. Step 3: Cross multiply
    347,039.08x = 520,620.36 × 122,529.86
  4. Step 4: Simplify right side
    347,039.08x = 63,791,542,331.41
  5. Step 5: Solve for x
    x = 63,791,542,331.41/347,039.08
  6. Step 6: Final answer
    x = 183,816.59

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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.