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Finding the Fourth Proportional to 320,577.90, 481,039.65 and 133,608.30

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Solution

The fourth proportional to 320,577.90, 481,039.65 and 133,608.30 is: 200,484.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,577.90 : 481,039.65 = 133,608.30 : x
  2. Step 2: Convert to fraction form
    320,577.90/481,039.65 = 133,608.30/x
  3. Step 3: Cross multiply
    320,577.90x = 481,039.65 × 133,608.30
  4. Step 4: Simplify right side
    320,577.90x = 64,270,889,869.10
  5. Step 5: Solve for x
    x = 64,270,889,869.10/320,577.90
  6. Step 6: Final answer
    x = 200,484.47

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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.