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Finding the Fourth Proportional to 666,338.10, 999,506.38 and 217,058.25

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Solution

The fourth proportional to 666,338.10, 999,506.38 and 217,058.25 is: 325,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,338.10 : 999,506.38 = 217,058.25 : x
  2. Step 2: Convert to fraction form
    666,338.10/999,506.38 = 217,058.25/x
  3. Step 3: Cross multiply
    666,338.10x = 999,506.38 × 217,058.25
  4. Step 4: Simplify right side
    666,338.10x = 216,951,105,706.64
  5. Step 5: Solve for x
    x = 216,951,105,706.64/666,338.10
  6. Step 6: Final answer
    x = 325,587.12

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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.