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Finding the Fourth Proportional to 315,553.73, 435,480.46 and 193,007.69

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Solution

The fourth proportional to 315,553.73, 435,480.46 and 193,007.69 is: 266,360.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,553.73 : 435,480.46 = 193,007.69 : x
  2. Step 2: Convert to fraction form
    315,553.73/435,480.46 = 193,007.69/x
  3. Step 3: Cross multiply
    315,553.73x = 435,480.46 × 193,007.69
  4. Step 4: Simplify right side
    315,553.73x = 84,051,076,597.87
  5. Step 5: Solve for x
    x = 84,051,076,597.87/315,553.73
  6. Step 6: Final answer
    x = 266,360.59

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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.