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Finding the Fourth Proportional to 315,345.47, 435,186.89 and 179,375.91

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Solution

The fourth proportional to 315,345.47, 435,186.89 and 179,375.91 is: 247,544.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,345.47 : 435,186.89 = 179,375.91 : x
  2. Step 2: Convert to fraction form
    315,345.47/435,186.89 = 179,375.91/x
  3. Step 3: Cross multiply
    315,345.47x = 435,186.89 × 179,375.91
  4. Step 4: Simplify right side
    315,345.47x = 78,062,043,516.94
  5. Step 5: Solve for x
    x = 78,062,043,516.94/315,345.47
  6. Step 6: Final answer
    x = 247,544.53

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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.