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Finding the Fourth Proportional to 439,834.86, 659,708.55 and 203,174.12

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Solution

The fourth proportional to 439,834.86, 659,708.55 and 203,174.12 is: 304,740.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,834.86 : 659,708.55 = 203,174.12 : x
  2. Step 2: Convert to fraction form
    439,834.86/659,708.55 = 203,174.12/x
  3. Step 3: Cross multiply
    439,834.86x = 659,708.55 × 203,174.12
  4. Step 4: Simplify right side
    439,834.86x = 134,035,705,752.00
  5. Step 5: Solve for x
    x = 134,035,705,752.00/439,834.86
  6. Step 6: Final answer
    x = 304,740.98

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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.