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Finding the Fourth Proportional to 408,469.08, 563,603.88 and 238,670.40

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Solution

The fourth proportional to 408,469.08, 563,603.88 and 238,670.40 is: 329,316.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,469.08 : 563,603.88 = 238,670.40 : x
  2. Step 2: Convert to fraction form
    408,469.08/563,603.88 = 238,670.40/x
  3. Step 3: Cross multiply
    408,469.08x = 563,603.88 × 238,670.40
  4. Step 4: Simplify right side
    408,469.08x = 134,515,563,481.15
  5. Step 5: Solve for x
    x = 134,515,563,481.15/408,469.08
  6. Step 6: Final answer
    x = 329,316.39

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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.