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Finding the Fourth Proportional to 354,571.20, 531,856.80 and 349,322.40

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Solution

The fourth proportional to 354,571.20, 531,856.80 and 349,322.40 is: 523,983.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,571.20 : 531,856.80 = 349,322.40 : x
  2. Step 2: Convert to fraction form
    354,571.20/531,856.80 = 349,322.40/x
  3. Step 3: Cross multiply
    354,571.20x = 531,856.80 × 349,322.40
  4. Step 4: Simplify right side
    354,571.20x = 185,789,493,832.32
  5. Step 5: Solve for x
    x = 185,789,493,832.32/354,571.20
  6. Step 6: Final answer
    x = 523,983.60

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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.