Home / 331,626.48-457,181.15-280,433.84

Finding the Fourth Proportional to 331,626.48, 457,181.15 and 280,433.84

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Solution

The fourth proportional to 331,626.48, 457,181.15 and 280,433.84 is: 386,606.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,626.48 : 457,181.15 = 280,433.84 : x
  2. Step 2: Convert to fraction form
    331,626.48/457,181.15 = 280,433.84/x
  3. Step 3: Cross multiply
    331,626.48x = 457,181.15 × 280,433.84
  4. Step 4: Simplify right side
    331,626.48x = 128,209,061,782.04
  5. Step 5: Solve for x
    x = 128,209,061,782.04/331,626.48
  6. Step 6: Final answer
    x = 386,606.83

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1.5x scale

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.