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Finding the Fourth Proportional to 320,588.40, 481,055.40 and 133,618.80

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Solution

The fourth proportional to 320,588.40, 481,055.40 and 133,618.80 is: 200,500.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,588.40 : 481,055.40 = 133,618.80 : x
  2. Step 2: Convert to fraction form
    320,588.40/481,055.40 = 133,618.80/x
  3. Step 3: Cross multiply
    320,588.40x = 481,055.40 × 133,618.80
  4. Step 4: Simplify right side
    320,588.40x = 64,278,045,281.52
  5. Step 5: Solve for x
    x = 64,278,045,281.52/320,588.40
  6. Step 6: Final answer
    x = 200,500.22

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1.5x scale

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.