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Finding the Fourth Proportional to 248,988.72, 343,602.24 and 135,809.04

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Solution

The fourth proportional to 248,988.72, 343,602.24 and 135,809.04 is: 187,415.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,988.72 : 343,602.24 = 135,809.04 : x
  2. Step 2: Convert to fraction form
    248,988.72/343,602.24 = 135,809.04/x
  3. Step 3: Cross multiply
    248,988.72x = 343,602.24 × 135,809.04
  4. Step 4: Simplify right side
    248,988.72x = 46,664,290,356.25
  5. Step 5: Solve for x
    x = 46,664,290,356.25/248,988.72
  6. Step 6: Final answer
    x = 187,415.28

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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.