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Finding the Fourth Proportional to 348,469.20, 487,234.80 and 348,469.20

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Solution

The fourth proportional to 348,469.20, 487,234.80 and 348,469.20 is: 487,234.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,469.20 : 487,234.80 = 348,469.20 : x
  2. Step 2: Convert to fraction form
    348,469.20/487,234.80 = 348,469.20/x
  3. Step 3: Cross multiply
    348,469.20x = 487,234.80 × 348,469.20
  4. Step 4: Simplify right side
    348,469.20x = 169,786,320,968.16
  5. Step 5: Solve for x
    x = 169,786,320,968.16/348,469.20
  6. Step 6: Final answer
    x = 487,234.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.