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Finding the Fourth Proportional to 666,334.68, 999,605.70 and 216,949.92

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Solution

The fourth proportional to 666,334.68, 999,605.70 and 216,949.92 is: 325,458.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,334.68 : 999,605.70 = 216,949.92 : x
  2. Step 2: Convert to fraction form
    666,334.68/999,605.70 = 216,949.92/x
  3. Step 3: Cross multiply
    666,334.68x = 999,605.70 × 216,949.92
  4. Step 4: Simplify right side
    666,334.68x = 216,864,376,646.54
  5. Step 5: Solve for x
    x = 216,864,376,646.54/666,334.68
  6. Step 6: Final answer
    x = 325,458.64

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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.