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Finding the Fourth Proportional to 666,533.66, 999,904.17 and 217,149.92

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Solution

The fourth proportional to 666,533.66, 999,904.17 and 217,149.92 is: 325,758.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,533.66 : 999,904.17 = 217,149.92 : x
  2. Step 2: Convert to fraction form
    666,533.66/999,904.17 = 217,149.92/x
  3. Step 3: Cross multiply
    666,533.66x = 999,904.17 × 217,149.92
  4. Step 4: Simplify right side
    666,533.66x = 217,129,105,523.65
  5. Step 5: Solve for x
    x = 217,129,105,523.65/666,533.66
  6. Step 6: Final answer
    x = 325,758.65

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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.