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Finding the Fourth Proportional to 275,860.13, 380,698.16 and 155,001.03

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Solution

The fourth proportional to 275,860.13, 380,698.16 and 155,001.03 is: 213,907.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,860.13 : 380,698.16 = 155,001.03 : x
  2. Step 2: Convert to fraction form
    275,860.13/380,698.16 = 155,001.03/x
  3. Step 3: Cross multiply
    275,860.13x = 380,698.16 × 155,001.03
  4. Step 4: Simplify right side
    275,860.13x = 59,008,606,144.10
  5. Step 5: Solve for x
    x = 59,008,606,144.10/275,860.13
  6. Step 6: Final answer
    x = 213,907.70

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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.