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Finding the Fourth Proportional to 436,470.40, 654,705.60 and 155,996.80

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Solution

The fourth proportional to 436,470.40, 654,705.60 and 155,996.80 is: 233,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,470.40 : 654,705.60 = 155,996.80 : x
  2. Step 2: Convert to fraction form
    436,470.40/654,705.60 = 155,996.80/x
  3. Step 3: Cross multiply
    436,470.40x = 654,705.60 × 155,996.80
  4. Step 4: Simplify right side
    436,470.40x = 102,131,978,542.08
  5. Step 5: Solve for x
    x = 102,131,978,542.08/436,470.40
  6. Step 6: Final answer
    x = 233,995.20

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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.