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Finding the Fourth Proportional to 318,091.74, 438,976.71 and 174,857.82

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Solution

The fourth proportional to 318,091.74, 438,976.71 and 174,857.82 is: 241,309.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,091.74 : 438,976.71 = 174,857.82 : x
  2. Step 2: Convert to fraction form
    318,091.74/438,976.71 = 174,857.82/x
  3. Step 3: Cross multiply
    318,091.74x = 438,976.71 × 174,857.82
  4. Step 4: Simplify right side
    318,091.74x = 76,758,510,541.37
  5. Step 5: Solve for x
    x = 76,758,510,541.37/318,091.74
  6. Step 6: Final answer
    x = 241,309.35

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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.