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Finding the Fourth Proportional to 348,685.20, 523,027.80 and 99,334.80

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Solution

The fourth proportional to 348,685.20, 523,027.80 and 99,334.80 is: 149,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,685.20 : 523,027.80 = 99,334.80 : x
  2. Step 2: Convert to fraction form
    348,685.20/523,027.80 = 99,334.80/x
  3. Step 3: Cross multiply
    348,685.20x = 523,027.80 × 99,334.80
  4. Step 4: Simplify right side
    348,685.20x = 51,954,861,907.44
  5. Step 5: Solve for x
    x = 51,954,861,907.44/348,685.20
  6. Step 6: Final answer
    x = 149,002.20

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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.