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Finding the Fourth Proportional to 385,708.98, 579,115.69 and 236,245.76

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Solution

The fourth proportional to 385,708.98, 579,115.69 and 236,245.76 is: 354,706.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,708.98 : 579,115.69 = 236,245.76 : x
  2. Step 2: Convert to fraction form
    385,708.98/579,115.69 = 236,245.76/x
  3. Step 3: Cross multiply
    385,708.98x = 579,115.69 × 236,245.76
  4. Step 4: Simplify right side
    385,708.98x = 136,813,622,825.78
  5. Step 5: Solve for x
    x = 136,813,622,825.78/385,708.98
  6. Step 6: Final answer
    x = 354,706.86

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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.