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Finding the Fourth Proportional to 404,472.80, 606,709.20 and 194,520.80

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Solution

The fourth proportional to 404,472.80, 606,709.20 and 194,520.80 is: 291,781.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,472.80 : 606,709.20 = 194,520.80 : x
  2. Step 2: Convert to fraction form
    404,472.80/606,709.20 = 194,520.80/x
  3. Step 3: Cross multiply
    404,472.80x = 606,709.20 × 194,520.80
  4. Step 4: Simplify right side
    404,472.80x = 118,017,558,951.36
  5. Step 5: Solve for x
    x = 118,017,558,951.36/404,472.80
  6. Step 6: Final answer
    x = 291,781.20

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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.