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Finding the Fourth Proportional to 666,351.74, 999,526.83 and 217,071.90

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Solution

The fourth proportional to 666,351.74, 999,526.83 and 217,071.90 is: 325,607.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,351.74 : 999,526.83 = 217,071.90 : x
  2. Step 2: Convert to fraction form
    666,351.74/999,526.83 = 217,071.90/x
  3. Step 3: Cross multiply
    666,351.74x = 999,526.83 × 217,071.90
  4. Step 4: Simplify right side
    666,351.74x = 216,969,188,089.08
  5. Step 5: Solve for x
    x = 216,969,188,089.08/666,351.74
  6. Step 6: Final answer
    x = 325,607.60

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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.