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Finding the Fourth Proportional to 254,288.68, 381,280.68 and 85,805.26

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Solution

The fourth proportional to 254,288.68, 381,280.68 and 85,805.26 is: 128,656.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,288.68 : 381,280.68 = 85,805.26 : x
  2. Step 2: Convert to fraction form
    254,288.68/381,280.68 = 85,805.26/x
  3. Step 3: Cross multiply
    254,288.68x = 381,280.68 × 85,805.26
  4. Step 4: Simplify right side
    254,288.68x = 32,715,887,880.38
  5. Step 5: Solve for x
    x = 32,715,887,880.38/254,288.68
  6. Step 6: Final answer
    x = 128,656.49

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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.