Home / 315,936.20-472,982.70-306,720.20

Finding the Fourth Proportional to 315,936.20, 472,982.70 and 306,720.20

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Solution

The fourth proportional to 315,936.20, 472,982.70 and 306,720.20 is: 459,185.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,936.20 : 472,982.70 = 306,720.20 : x
  2. Step 2: Convert to fraction form
    315,936.20/472,982.70 = 306,720.20/x
  3. Step 3: Cross multiply
    315,936.20x = 472,982.70 × 306,720.20
  4. Step 4: Simplify right side
    315,936.20x = 145,073,348,340.54
  5. Step 5: Solve for x
    x = 145,073,348,340.54/315,936.20
  6. Step 6: Final answer
    x = 459,185.58

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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.