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Finding the Fourth Proportional to 668,672.40, 1,003,005.11 and 163,236.05

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Solution

The fourth proportional to 668,672.40, 1,003,005.11 and 163,236.05 is: 244,853.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,672.40 : 1,003,005.11 = 163,236.05 : x
  2. Step 2: Convert to fraction form
    668,672.40/1,003,005.11 = 163,236.05/x
  3. Step 3: Cross multiply
    668,672.40x = 1,003,005.11 × 163,236.05
  4. Step 4: Simplify right side
    668,672.40x = 163,726,587,679.28
  5. Step 5: Solve for x
    x = 163,726,587,679.28/668,672.40
  6. Step 6: Final answer
    x = 244,853.22

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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.