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Finding the Fourth Proportional to 315,858.91, 435,885.34 and 179,905.51

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Solution

The fourth proportional to 315,858.91, 435,885.34 and 179,905.51 is: 248,269.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,858.91 : 435,885.34 = 179,905.51 : x
  2. Step 2: Convert to fraction form
    315,858.91/435,885.34 = 179,905.51/x
  3. Step 3: Cross multiply
    315,858.91x = 435,885.34 × 179,905.51
  4. Step 4: Simplify right side
    315,858.91x = 78,418,174,394.22
  5. Step 5: Solve for x
    x = 78,418,174,394.22/315,858.91
  6. Step 6: Final answer
    x = 248,269.63

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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.