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Finding the Fourth Proportional to 330,081.64, 494,480.03 and 243,369.58

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Solution

The fourth proportional to 330,081.64, 494,480.03 and 243,369.58 is: 364,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,081.64 : 494,480.03 = 243,369.58 : x
  2. Step 2: Convert to fraction form
    330,081.64/494,480.03 = 243,369.58/x
  3. Step 3: Cross multiply
    330,081.64x = 494,480.03 × 243,369.58
  4. Step 4: Simplify right side
    330,081.64x = 120,341,395,374.86
  5. Step 5: Solve for x
    x = 120,341,395,374.86/330,081.64
  6. Step 6: Final answer
    x = 364,580.70

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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.