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Finding the Fourth Proportional to 659,164.70, 988,552.65 and 259,672.70

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Solution

The fourth proportional to 659,164.70, 988,552.65 and 259,672.70 is: 389,432.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,164.70 : 988,552.65 = 259,672.70 : x
  2. Step 2: Convert to fraction form
    659,164.70/988,552.65 = 259,672.70/x
  3. Step 3: Cross multiply
    659,164.70x = 988,552.65 × 259,672.70
  4. Step 4: Simplify right side
    659,164.70x = 256,700,135,717.66
  5. Step 5: Solve for x
    x = 256,700,135,717.66/659,164.70
  6. Step 6: Final answer
    x = 389,432.47

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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.