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Finding the Fourth Proportional to 274,958.40, 412,437.28 and 75,280.32

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Solution

The fourth proportional to 274,958.40, 412,437.28 and 75,280.32 is: 112,920.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,958.40 : 412,437.28 = 75,280.32 : x
  2. Step 2: Convert to fraction form
    274,958.40/412,437.28 = 75,280.32/x
  3. Step 3: Cross multiply
    274,958.40x = 412,437.28 × 75,280.32
  4. Step 4: Simplify right side
    274,958.40x = 31,048,410,418.33
  5. Step 5: Solve for x
    x = 31,048,410,418.33/274,958.40
  6. Step 6: Final answer
    x = 112,920.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.