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Finding the Fourth Proportional to 354,586, 489,328.68 and 227,261.60

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Solution

The fourth proportional to 354,586, 489,328.68 and 227,261.60 is: 313,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,586 : 489,328.68 = 227,261.60 : x
  2. Step 2: Convert to fraction form
    354,586/489,328.68 = 227,261.60/x
  3. Step 3: Cross multiply
    354,586x = 489,328.68 × 227,261.60
  4. Step 4: Simplify right side
    354,586x = 111,205,618,742.69
  5. Step 5: Solve for x
    x = 111,205,618,742.69/354,586
  6. Step 6: Final answer
    x = 313,621.01

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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.