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Finding the Fourth Proportional to 459,436.88, 689,100.60 and 122,502.80

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Solution

The fourth proportional to 459,436.88, 689,100.60 and 122,502.80 is: 183,739.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,436.88 : 689,100.60 = 122,502.80 : x
  2. Step 2: Convert to fraction form
    459,436.88/689,100.60 = 122,502.80/x
  3. Step 3: Cross multiply
    459,436.88x = 689,100.60 × 122,502.80
  4. Step 4: Simplify right side
    459,436.88x = 84,416,752,981.68
  5. Step 5: Solve for x
    x = 84,416,752,981.68/459,436.88
  6. Step 6: Final answer
    x = 183,739.61

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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.