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Finding the Fourth Proportional to 550,904.98, 760,286.53 and 305,902.39

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Solution

The fourth proportional to 550,904.98, 760,286.53 and 305,902.39 is: 422,166.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,904.98 : 760,286.53 = 305,902.39 : x
  2. Step 2: Convert to fraction form
    550,904.98/760,286.53 = 305,902.39/x
  3. Step 3: Cross multiply
    550,904.98x = 760,286.53 × 305,902.39
  4. Step 4: Simplify right side
    550,904.98x = 232,573,465,658.66
  5. Step 5: Solve for x
    x = 232,573,465,658.66/550,904.98
  6. Step 6: Final answer
    x = 422,166.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.