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Finding the Fourth Proportional to 400,117.15, 600,207.18 and 133,878.61

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Solution

The fourth proportional to 400,117.15, 600,207.18 and 133,878.61 is: 200,828.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,117.15 : 600,207.18 = 133,878.61 : x
  2. Step 2: Convert to fraction form
    400,117.15/600,207.18 = 133,878.61/x
  3. Step 3: Cross multiply
    400,117.15x = 600,207.18 × 133,878.61
  4. Step 4: Simplify right side
    400,117.15x = 80,354,902,970.42
  5. Step 5: Solve for x
    x = 80,354,902,970.42/400,117.15
  6. Step 6: Final answer
    x = 200,828.44

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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.