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Finding the Fourth Proportional to 666,349.49, 999,523.46 and 217,069.64

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Solution

The fourth proportional to 666,349.49, 999,523.46 and 217,069.64 is: 325,604.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,349.49 : 999,523.46 = 217,069.64 : x
  2. Step 2: Convert to fraction form
    666,349.49/999,523.46 = 217,069.64/x
  3. Step 3: Cross multiply
    666,349.49x = 999,523.46 × 217,069.64
  4. Step 4: Simplify right side
    666,349.49x = 216,966,196,927.02
  5. Step 5: Solve for x
    x = 216,966,196,927.02/666,349.49
  6. Step 6: Final answer
    x = 325,604.21

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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.