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Finding the Fourth Proportional to 255,137.28, 385,102.32 and 255,137.28

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Solution

The fourth proportional to 255,137.28, 385,102.32 and 255,137.28 is: 385,102.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,137.28 : 385,102.32 = 255,137.28 : x
  2. Step 2: Convert to fraction form
    255,137.28/385,102.32 = 255,137.28/x
  3. Step 3: Cross multiply
    255,137.28x = 385,102.32 × 255,137.28
  4. Step 4: Simplify right side
    255,137.28x = 98,253,958,446.49
  5. Step 5: Solve for x
    x = 98,253,958,446.49/255,137.28
  6. Step 6: Final answer
    x = 385,102.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.