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Finding the Fourth Proportional to 659,186.55, 988,874.58 and 203,813.30

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Solution

The fourth proportional to 659,186.55, 988,874.58 and 203,813.30 is: 305,749.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,186.55 : 988,874.58 = 203,813.30 : x
  2. Step 2: Convert to fraction form
    659,186.55/988,874.58 = 203,813.30/x
  3. Step 3: Cross multiply
    659,186.55x = 988,874.58 × 203,813.30
  4. Step 4: Simplify right side
    659,186.55x = 201,545,792,159.23
  5. Step 5: Solve for x
    x = 201,545,792,159.23/659,186.55
  6. Step 6: Final answer
    x = 305,749.25

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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.