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Finding the Fourth Proportional to 275,052.51, 379,561.64 and 155,820.51

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Solution

The fourth proportional to 275,052.51, 379,561.64 and 155,820.51 is: 215,026.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,052.51 : 379,561.64 = 155,820.51 : x
  2. Step 2: Convert to fraction form
    275,052.51/379,561.64 = 155,820.51/x
  3. Step 3: Cross multiply
    275,052.51x = 379,561.64 × 155,820.51
  4. Step 4: Simplify right side
    275,052.51x = 59,143,487,542.13
  5. Step 5: Solve for x
    x = 59,143,487,542.13/275,052.51
  6. Step 6: Final answer
    x = 215,026.17

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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.