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Finding the Fourth Proportional to 398,558.61, 597,919.93 and 220,691.93

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Solution

The fourth proportional to 398,558.61, 597,919.93 and 220,691.93 is: 331,083.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,558.61 : 597,919.93 = 220,691.93 : x
  2. Step 2: Convert to fraction form
    398,558.61/597,919.93 = 220,691.93/x
  3. Step 3: Cross multiply
    398,558.61x = 597,919.93 × 220,691.93
  4. Step 4: Simplify right side
    398,558.61x = 131,956,099,795.84
  5. Step 5: Solve for x
    x = 131,956,099,795.84/398,558.61
  6. Step 6: Final answer
    x = 331,083.30

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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.