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Finding the Fourth Proportional to 368,793.60, 551,878.20 and 255,944.40

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Solution

The fourth proportional to 368,793.60, 551,878.20 and 255,944.40 is: 383,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,793.60 : 551,878.20 = 255,944.40 : x
  2. Step 2: Convert to fraction form
    368,793.60/551,878.20 = 255,944.40/x
  3. Step 3: Cross multiply
    368,793.60x = 551,878.20 × 255,944.40
  4. Step 4: Simplify right side
    368,793.60x = 141,250,134,772.08
  5. Step 5: Solve for x
    x = 141,250,134,772.08/368,793.60
  6. Step 6: Final answer
    x = 383,005.93

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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.