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Finding the Fourth Proportional to 666,344.82, 999,516.42 and 217,064.96

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Solution

The fourth proportional to 666,344.82, 999,516.42 and 217,064.96 is: 325,597.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,344.82 : 999,516.42 = 217,064.96 : x
  2. Step 2: Convert to fraction form
    666,344.82/999,516.42 = 217,064.96/x
  3. Step 3: Cross multiply
    666,344.82x = 999,516.42 × 217,064.96
  4. Step 4: Simplify right side
    666,344.82x = 216,959,990,477.25
  5. Step 5: Solve for x
    x = 216,959,990,477.25/666,344.82
  6. Step 6: Final answer
    x = 325,597.17

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1.5x scale

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.