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Finding the Fourth Proportional to 356,330.49, 491,744 and 203,365.63

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Solution

The fourth proportional to 356,330.49, 491,744 and 203,365.63 is: 280,649.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,330.49 : 491,744 = 203,365.63 : x
  2. Step 2: Convert to fraction form
    356,330.49/491,744 = 203,365.63/x
  3. Step 3: Cross multiply
    356,330.49x = 491,744 × 203,365.63
  4. Step 4: Simplify right side
    356,330.49x = 100,003,828,358.72
  5. Step 5: Solve for x
    x = 100,003,828,358.72/356,330.49
  6. Step 6: Final answer
    x = 280,649.09

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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.