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Finding the Fourth Proportional to 274,956.90, 412,435.55 and 75,278.94

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Solution

The fourth proportional to 274,956.90, 412,435.55 and 75,278.94 is: 112,918.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,956.90 : 412,435.55 = 75,278.94 : x
  2. Step 2: Convert to fraction form
    274,956.90/412,435.55 = 75,278.94/x
  3. Step 3: Cross multiply
    274,956.90x = 412,435.55 × 75,278.94
  4. Step 4: Simplify right side
    274,956.90x = 31,047,711,022.32
  5. Step 5: Solve for x
    x = 31,047,711,022.32/274,956.90
  6. Step 6: Final answer
    x = 112,918.46

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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.