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Finding the Fourth Proportional to 383,915.60, 576,132.60 and 225,976.40

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Solution

The fourth proportional to 383,915.60, 576,132.60 and 225,976.40 is: 339,117.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,915.60 : 576,132.60 = 225,976.40 : x
  2. Step 2: Convert to fraction form
    383,915.60/576,132.60 = 225,976.40/x
  3. Step 3: Cross multiply
    383,915.60x = 576,132.60 × 225,976.40
  4. Step 4: Simplify right side
    383,915.60x = 130,192,370,870.64
  5. Step 5: Solve for x
    x = 130,192,370,870.64/383,915.60
  6. Step 6: Final answer
    x = 339,117.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.