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Finding the Fourth Proportional to 666,533.16, 999,903.42 and 217,149.42

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Solution

The fourth proportional to 666,533.16, 999,903.42 and 217,149.42 is: 325,757.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,533.16 : 999,903.42 = 217,149.42 : x
  2. Step 2: Convert to fraction form
    666,533.16/999,903.42 = 217,149.42/x
  3. Step 3: Cross multiply
    666,533.16x = 999,903.42 × 217,149.42
  4. Step 4: Simplify right side
    666,533.16x = 217,128,442,709.50
  5. Step 5: Solve for x
    x = 217,128,442,709.50/666,533.16
  6. Step 6: Final answer
    x = 325,757.90

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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.