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Finding the Fourth Proportional to 254,130.51, 381,098.49 and 85,605.55

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Solution

The fourth proportional to 254,130.51, 381,098.49 and 85,605.55 is: 128,375.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,130.51 : 381,098.49 = 85,605.55 : x
  2. Step 2: Convert to fraction form
    254,130.51/381,098.49 = 85,605.55/x
  3. Step 3: Cross multiply
    254,130.51x = 381,098.49 × 85,605.55
  4. Step 4: Simplify right side
    254,130.51x = 32,624,145,840.62
  5. Step 5: Solve for x
    x = 32,624,145,840.62/254,130.51
  6. Step 6: Final answer
    x = 128,375.56

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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.