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Finding the Fourth Proportional to 666,532.91, 999,903.05 and 217,149.17

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Solution

The fourth proportional to 666,532.91, 999,903.05 and 217,149.17 is: 325,757.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,532.91 : 999,903.05 = 217,149.17 : x
  2. Step 2: Convert to fraction form
    666,532.91/999,903.05 = 217,149.17/x
  3. Step 3: Cross multiply
    666,532.91x = 999,903.05 × 217,149.17
  4. Step 4: Simplify right side
    666,532.91x = 217,128,111,302.71
  5. Step 5: Solve for x
    x = 217,128,111,302.71/666,532.91
  6. Step 6: Final answer
    x = 325,757.53

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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.