Home / 280,905.04-421,324.74-112,418.56

Finding the Fourth Proportional to 280,905.04, 421,324.74 and 112,418.56

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Solution

The fourth proportional to 280,905.04, 421,324.74 and 112,418.56 is: 168,614.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,905.04 : 421,324.74 = 112,418.56 : x
  2. Step 2: Convert to fraction form
    280,905.04/421,324.74 = 112,418.56/x
  3. Step 3: Cross multiply
    280,905.04x = 421,324.74 × 112,418.56
  4. Step 4: Simplify right side
    280,905.04x = 47,364,720,563.17
  5. Step 5: Solve for x
    x = 47,364,720,563.17/280,905.04
  6. Step 6: Final answer
    x = 168,614.71

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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.