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Finding the Fourth Proportional to 459,755.48, 689,604.60 and 220,039.64

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Solution

The fourth proportional to 459,755.48, 689,604.60 and 220,039.64 is: 330,045.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,755.48 : 689,604.60 = 220,039.64 : x
  2. Step 2: Convert to fraction form
    459,755.48/689,604.60 = 220,039.64/x
  3. Step 3: Cross multiply
    459,755.48x = 689,604.60 × 220,039.64
  4. Step 4: Simplify right side
    459,755.48x = 151,740,347,926.34
  5. Step 5: Solve for x
    x = 151,740,347,926.34/459,755.48
  6. Step 6: Final answer
    x = 330,045.76

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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.