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Finding the Fourth Proportional to 275,903.25, 380,754.08 and 155,055.56

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Solution

The fourth proportional to 275,903.25, 380,754.08 and 155,055.56 is: 213,980.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,903.25 : 380,754.08 = 155,055.56 : x
  2. Step 2: Convert to fraction form
    275,903.25/380,754.08 = 155,055.56/x
  3. Step 3: Cross multiply
    275,903.25x = 380,754.08 × 155,055.56
  4. Step 4: Simplify right side
    275,903.25x = 59,038,036,136.19
  5. Step 5: Solve for x
    x = 59,038,036,136.19/275,903.25
  6. Step 6: Final answer
    x = 213,980.93

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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.