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Finding the Fourth Proportional to 714,318.88, 1,071,447.60 and 215,668

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Solution

The fourth proportional to 714,318.88, 1,071,447.60 and 215,668 is: 323,492.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,318.88 : 1,071,447.60 = 215,668 : x
  2. Step 2: Convert to fraction form
    714,318.88/1,071,447.60 = 215,668/x
  3. Step 3: Cross multiply
    714,318.88x = 1,071,447.60 × 215,668
  4. Step 4: Simplify right side
    714,318.88x = 231,076,960,996.80
  5. Step 5: Solve for x
    x = 231,076,960,996.80/714,318.88
  6. Step 6: Final answer
    x = 323,492.72

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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.