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Finding the Fourth Proportional to 666,244.44, 999,221.94 and 210,871.08

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Solution

The fourth proportional to 666,244.44, 999,221.94 and 210,871.08 is: 316,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,244.44 : 999,221.94 = 210,871.08 : x
  2. Step 2: Convert to fraction form
    666,244.44/999,221.94 = 210,871.08/x
  3. Step 3: Cross multiply
    666,244.44x = 999,221.94 × 210,871.08
  4. Step 4: Simplify right side
    666,244.44x = 210,707,009,647.50
  5. Step 5: Solve for x
    x = 210,707,009,647.50/666,244.44
  6. Step 6: Final answer
    x = 316,260.82

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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.