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Finding the Fourth Proportional to 323,857.70, 485,786.55 and 245,125.70

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Solution

The fourth proportional to 323,857.70, 485,786.55 and 245,125.70 is: 367,688.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,857.70 : 485,786.55 = 245,125.70 : x
  2. Step 2: Convert to fraction form
    323,857.70/485,786.55 = 245,125.70/x
  3. Step 3: Cross multiply
    323,857.70x = 485,786.55 × 245,125.70
  4. Step 4: Simplify right side
    323,857.70x = 119,078,768,119.34
  5. Step 5: Solve for x
    x = 119,078,768,119.34/323,857.70
  6. Step 6: Final answer
    x = 367,688.55

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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.