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Finding the Fourth Proportional to 666,903.12, 1,000,356.12 and 168,267.12

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Solution

The fourth proportional to 666,903.12, 1,000,356.12 and 168,267.12 is: 252,401.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,903.12 : 1,000,356.12 = 168,267.12 : x
  2. Step 2: Convert to fraction form
    666,903.12/1,000,356.12 = 168,267.12/x
  3. Step 3: Cross multiply
    666,903.12x = 1,000,356.12 × 168,267.12
  4. Step 4: Simplify right side
    666,903.12x = 168,327,043,286.77
  5. Step 5: Solve for x
    x = 168,327,043,286.77/666,903.12
  6. Step 6: Final answer
    x = 252,401.04

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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.