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Finding the Fourth Proportional to 299,090.40, 412,511.37 and 191,670.42

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Solution

The fourth proportional to 299,090.40, 412,511.37 and 191,670.42 is: 264,355.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,090.40 : 412,511.37 = 191,670.42 : x
  2. Step 2: Convert to fraction form
    299,090.40/412,511.37 = 191,670.42/x
  3. Step 3: Cross multiply
    299,090.40x = 412,511.37 × 191,670.42
  4. Step 4: Simplify right side
    299,090.40x = 79,066,227,542.68
  5. Step 5: Solve for x
    x = 79,066,227,542.68/299,090.40
  6. Step 6: Final answer
    x = 264,355.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.