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Finding the Fourth Proportional to 228,111.03, 314,805.20 and 137,495.79

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Solution

The fourth proportional to 228,111.03, 314,805.20 and 137,495.79 is: 189,751.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,111.03 : 314,805.20 = 137,495.79 : x
  2. Step 2: Convert to fraction form
    228,111.03/314,805.20 = 137,495.79/x
  3. Step 3: Cross multiply
    228,111.03x = 314,805.20 × 137,495.79
  4. Step 4: Simplify right side
    228,111.03x = 43,284,388,982.63
  5. Step 5: Solve for x
    x = 43,284,388,982.63/228,111.03
  6. Step 6: Final answer
    x = 189,751.41

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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.