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Finding the Fourth Proportional to 248,898.40, 343,480.02 and 135,721.15

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Solution

The fourth proportional to 248,898.40, 343,480.02 and 135,721.15 is: 187,295.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,898.40 : 343,480.02 = 135,721.15 : x
  2. Step 2: Convert to fraction form
    248,898.40/343,480.02 = 135,721.15/x
  3. Step 3: Cross multiply
    248,898.40x = 343,480.02 × 135,721.15
  4. Step 4: Simplify right side
    248,898.40x = 46,617,503,316.42
  5. Step 5: Solve for x
    x = 46,617,503,316.42/248,898.40
  6. Step 6: Final answer
    x = 187,295.31

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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.