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Finding the Fourth Proportional to 363,931.60, 545,800.20 and 111,211.60

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Solution

The fourth proportional to 363,931.60, 545,800.20 and 111,211.60 is: 166,787.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,931.60 : 545,800.20 = 111,211.60 : x
  2. Step 2: Convert to fraction form
    363,931.60/545,800.20 = 111,211.60/x
  3. Step 3: Cross multiply
    363,931.60x = 545,800.20 × 111,211.60
  4. Step 4: Simplify right side
    363,931.60x = 60,699,313,522.32
  5. Step 5: Solve for x
    x = 60,699,313,522.32/363,931.60
  6. Step 6: Final answer
    x = 166,787.70

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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.