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Finding the Fourth Proportional to 256,112.10, 384,168.15 and 122,923.80

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Solution

The fourth proportional to 256,112.10, 384,168.15 and 122,923.80 is: 184,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,112.10 : 384,168.15 = 122,923.80 : x
  2. Step 2: Convert to fraction form
    256,112.10/384,168.15 = 122,923.80/x
  3. Step 3: Cross multiply
    256,112.10x = 384,168.15 × 122,923.80
  4. Step 4: Simplify right side
    256,112.10x = 47,223,408,836.97
  5. Step 5: Solve for x
    x = 47,223,408,836.97/256,112.10
  6. Step 6: Final answer
    x = 184,385.70

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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.