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Finding the Fourth Proportional to 282,535.56, 389,430.72 and 275,056.56

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Solution

The fourth proportional to 282,535.56, 389,430.72 and 275,056.56 is: 379,122.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,535.56 : 389,430.72 = 275,056.56 : x
  2. Step 2: Convert to fraction form
    282,535.56/389,430.72 = 275,056.56/x
  3. Step 3: Cross multiply
    282,535.56x = 389,430.72 × 275,056.56
  4. Step 4: Simplify right side
    282,535.56x = 107,115,474,201.52
  5. Step 5: Solve for x
    x = 107,115,474,201.52/282,535.56
  6. Step 6: Final answer
    x = 379,122.10

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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.