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Finding the Fourth Proportional to 666,347.84, 999,520.98 and 217,068

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Solution

The fourth proportional to 666,347.84, 999,520.98 and 217,068 is: 325,601.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,347.84 : 999,520.98 = 217,068 : x
  2. Step 2: Convert to fraction form
    666,347.84/999,520.98 = 217,068/x
  3. Step 3: Cross multiply
    666,347.84x = 999,520.98 × 217,068
  4. Step 4: Simplify right side
    666,347.84x = 216,964,020,086.64
  5. Step 5: Solve for x
    x = 216,964,020,086.64/666,347.84
  6. Step 6: Final answer
    x = 325,601.75

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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.