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Finding the Fourth Proportional to 254,274.36, 381,259.32 and 85,790.96

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Solution

The fourth proportional to 254,274.36, 381,259.32 and 85,790.96 is: 128,635.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,274.36 : 381,259.32 = 85,790.96 : x
  2. Step 2: Convert to fraction form
    254,274.36/381,259.32 = 85,790.96/x
  3. Step 3: Cross multiply
    254,274.36x = 381,259.32 × 85,790.96
  4. Step 4: Simplify right side
    254,274.36x = 32,708,603,071.75
  5. Step 5: Solve for x
    x = 32,708,603,071.75/254,274.36
  6. Step 6: Final answer
    x = 128,635.08

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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.