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Finding the Fourth Proportional to 591,207.60, 886,638.60 and 212,084.40

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Solution

The fourth proportional to 591,207.60, 886,638.60 and 212,084.40 is: 318,064.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,207.60 : 886,638.60 = 212,084.40 : x
  2. Step 2: Convert to fraction form
    591,207.60/886,638.60 = 212,084.40/x
  3. Step 3: Cross multiply
    591,207.60x = 886,638.60 × 212,084.40
  4. Step 4: Simplify right side
    591,207.60x = 188,042,215,497.84
  5. Step 5: Solve for x
    x = 188,042,215,497.84/591,207.60
  6. Step 6: Final answer
    x = 318,064.61

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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.