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Finding the Fourth Proportional to 665,749.05, 998,601.71 and 266,282.55

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Solution

The fourth proportional to 665,749.05, 998,601.71 and 266,282.55 is: 399,415.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,749.05 : 998,601.71 = 266,282.55 : x
  2. Step 2: Convert to fraction form
    665,749.05/998,601.71 = 266,282.55/x
  3. Step 3: Cross multiply
    665,749.05x = 998,601.71 × 266,282.55
  4. Step 4: Simplify right side
    665,749.05x = 265,910,208,441.75
  5. Step 5: Solve for x
    x = 265,910,208,441.75/665,749.05
  6. Step 6: Final answer
    x = 399,415.08

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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.