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Finding the Fourth Proportional to 354,485.88, 531,429.93 and 154,659.70

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Solution

The fourth proportional to 354,485.88, 531,429.93 and 154,659.70 is: 231,859.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,485.88 : 531,429.93 = 154,659.70 : x
  2. Step 2: Convert to fraction form
    354,485.88/531,429.93 = 154,659.70/x
  3. Step 3: Cross multiply
    354,485.88x = 531,429.93 × 154,659.70
  4. Step 4: Simplify right side
    354,485.88x = 82,190,793,544.82
  5. Step 5: Solve for x
    x = 82,190,793,544.82/354,485.88
  6. Step 6: Final answer
    x = 231,859.15

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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.