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Finding the Fourth Proportional to 383,990.40, 574,673.40 and 336,751.20

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Solution

The fourth proportional to 383,990.40, 574,673.40 and 336,751.20 is: 503,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,990.40 : 574,673.40 = 336,751.20 : x
  2. Step 2: Convert to fraction form
    383,990.40/574,673.40 = 336,751.20/x
  3. Step 3: Cross multiply
    383,990.40x = 574,673.40 × 336,751.20
  4. Step 4: Simplify right side
    383,990.40x = 193,521,957,058.08
  5. Step 5: Solve for x
    x = 193,521,957,058.08/383,990.40
  6. Step 6: Final answer
    x = 503,976.03

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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.