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Finding the Fourth Proportional to 666,349.34, 999,523.21 and 217,069.47

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Solution

The fourth proportional to 666,349.34, 999,523.21 and 217,069.47 is: 325,603.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,349.34 : 999,523.21 = 217,069.47 : x
  2. Step 2: Convert to fraction form
    666,349.34/999,523.21 = 217,069.47/x
  3. Step 3: Cross multiply
    666,349.34x = 999,523.21 × 217,069.47
  4. Step 4: Simplify right side
    666,349.34x = 216,965,973,447.40
  5. Step 5: Solve for x
    x = 216,965,973,447.40/666,349.34
  6. Step 6: Final answer
    x = 325,603.95

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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.