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Finding the Fourth Proportional to 354,311.04, 531,468.48 and 104,995.20

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Solution

The fourth proportional to 354,311.04, 531,468.48 and 104,995.20 is: 157,493.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,311.04 : 531,468.48 = 104,995.20 : x
  2. Step 2: Convert to fraction form
    354,311.04/531,468.48 = 104,995.20/x
  3. Step 3: Cross multiply
    354,311.04x = 531,468.48 × 104,995.20
  4. Step 4: Simplify right side
    354,311.04x = 55,801,639,351.30
  5. Step 5: Solve for x
    x = 55,801,639,351.30/354,311.04
  6. Step 6: Final answer
    x = 157,493.37

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1.5x scale

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.