Home / 254,560.40-381,840.60-128,589.20

Finding the Fourth Proportional to 254,560.40, 381,840.60 and 128,589.20

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Solution

The fourth proportional to 254,560.40, 381,840.60 and 128,589.20 is: 192,883.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,560.40 : 381,840.60 = 128,589.20 : x
  2. Step 2: Convert to fraction form
    254,560.40/381,840.60 = 128,589.20/x
  3. Step 3: Cross multiply
    254,560.40x = 381,840.60 × 128,589.20
  4. Step 4: Simplify right side
    254,560.40x = 49,100,577,281.52
  5. Step 5: Solve for x
    x = 49,100,577,281.52/254,560.40
  6. Step 6: Final answer
    x = 192,883.80

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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.