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Finding the Fourth Proportional to 254,178.98, 381,002.42 and 85,641.08

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Solution

The fourth proportional to 254,178.98, 381,002.42 and 85,641.08 is: 128,371.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,178.98 : 381,002.42 = 85,641.08 : x
  2. Step 2: Convert to fraction form
    254,178.98/381,002.42 = 85,641.08/x
  3. Step 3: Cross multiply
    254,178.98x = 381,002.42 × 85,641.08
  4. Step 4: Simplify right side
    254,178.98x = 32,629,458,731.41
  5. Step 5: Solve for x
    x = 32,629,458,731.41/254,178.98
  6. Step 6: Final answer
    x = 128,371.98

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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.