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Finding the Fourth Proportional to 310,803.38, 428,878.60 and 174,884.37

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Solution

The fourth proportional to 310,803.38, 428,878.60 and 174,884.37 is: 241,323.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,803.38 : 428,878.60 = 174,884.37 : x
  2. Step 2: Convert to fraction form
    310,803.38/428,878.60 = 174,884.37/x
  3. Step 3: Cross multiply
    310,803.38x = 428,878.60 × 174,884.37
  4. Step 4: Simplify right side
    310,803.38x = 75,004,161,721.98
  5. Step 5: Solve for x
    x = 75,004,161,721.98/310,803.38
  6. Step 6: Final answer
    x = 241,323.51

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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.