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Finding the Fourth Proportional to 354,649.32, 489,415.86 and 227,324.79

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Solution

The fourth proportional to 354,649.32, 489,415.86 and 227,324.79 is: 313,708.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,649.32 : 489,415.86 = 227,324.79 : x
  2. Step 2: Convert to fraction form
    354,649.32/489,415.86 = 227,324.79/x
  3. Step 3: Cross multiply
    354,649.32x = 489,415.86 × 227,324.79
  4. Step 4: Simplify right side
    354,649.32x = 111,256,357,597.17
  5. Step 5: Solve for x
    x = 111,256,357,597.17/354,649.32
  6. Step 6: Final answer
    x = 313,708.08

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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.