Home / 254,550.40-381,825.60-128,579.20

Finding the Fourth Proportional to 254,550.40, 381,825.60 and 128,579.20

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Solution

The fourth proportional to 254,550.40, 381,825.60 and 128,579.20 is: 192,868.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,550.40 : 381,825.60 = 128,579.20 : x
  2. Step 2: Convert to fraction form
    254,550.40/381,825.60 = 128,579.20/x
  3. Step 3: Cross multiply
    254,550.40x = 381,825.60 × 128,579.20
  4. Step 4: Simplify right side
    254,550.40x = 49,094,830,187.52
  5. Step 5: Solve for x
    x = 49,094,830,187.52/254,550.40
  6. Step 6: Final answer
    x = 192,868.80

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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.