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Finding the Fourth Proportional to 356,407.74, 491,439.69 and 227,173.86

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Solution

The fourth proportional to 356,407.74, 491,439.69 and 227,173.86 is: 313,243.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,407.74 : 491,439.69 = 227,173.86 : x
  2. Step 2: Convert to fraction form
    356,407.74/491,439.69 = 227,173.86/x
  3. Step 3: Cross multiply
    356,407.74x = 491,439.69 × 227,173.86
  4. Step 4: Simplify right side
    356,407.74x = 111,642,251,334.50
  5. Step 5: Solve for x
    x = 111,642,251,334.50/356,407.74
  6. Step 6: Final answer
    x = 313,243.06

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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.