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Finding the Fourth Proportional to 354,661.32, 489,432.42 and 227,336.82

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Solution

The fourth proportional to 354,661.32, 489,432.42 and 227,336.82 is: 313,724.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,661.32 : 489,432.42 = 227,336.82 : x
  2. Step 2: Convert to fraction form
    354,661.32/489,432.42 = 227,336.82/x
  3. Step 3: Cross multiply
    354,661.32x = 489,432.42 × 227,336.82
  4. Step 4: Simplify right side
    354,661.32x = 111,266,009,967.70
  5. Step 5: Solve for x
    x = 111,266,009,967.70/354,661.32
  6. Step 6: Final answer
    x = 313,724.68

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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.