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Finding the Fourth Proportional to 404,611.80, 606,237.30 and 320,047.80

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Solution

The fourth proportional to 404,611.80, 606,237.30 and 320,047.80 is: 479,533.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,611.80 : 606,237.30 = 320,047.80 : x
  2. Step 2: Convert to fraction form
    404,611.80/606,237.30 = 320,047.80/x
  3. Step 3: Cross multiply
    404,611.80x = 606,237.30 × 320,047.80
  4. Step 4: Simplify right side
    404,611.80x = 194,024,914,142.94
  5. Step 5: Solve for x
    x = 194,024,914,142.94/404,611.80
  6. Step 6: Final answer
    x = 479,533.50

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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.