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Finding the Fourth Proportional to 256,912.70, 385,369.05 and 246,415.10

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Solution

The fourth proportional to 256,912.70, 385,369.05 and 246,415.10 is: 369,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,912.70 : 385,369.05 = 246,415.10 : x
  2. Step 2: Convert to fraction form
    256,912.70/385,369.05 = 246,415.10/x
  3. Step 3: Cross multiply
    256,912.70x = 385,369.05 × 246,415.10
  4. Step 4: Simplify right side
    256,912.70x = 94,960,752,992.66
  5. Step 5: Solve for x
    x = 94,960,752,992.66/256,912.70
  6. Step 6: Final answer
    x = 369,622.65

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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.