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Finding the Fourth Proportional to 306,352.60, 459,708.72 and 128,845.96

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Solution

The fourth proportional to 306,352.60, 459,708.72 and 128,845.96 is: 193,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,352.60 : 459,708.72 = 128,845.96 : x
  2. Step 2: Convert to fraction form
    306,352.60/459,708.72 = 128,845.96/x
  3. Step 3: Cross multiply
    306,352.60x = 459,708.72 × 128,845.96
  4. Step 4: Simplify right side
    306,352.60x = 59,231,611,348.77
  5. Step 5: Solve for x
    x = 59,231,611,348.77/306,352.60
  6. Step 6: Final answer
    x = 193,344.57

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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.