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Finding the Fourth Proportional to 262,247.70, 393,371.55 and 231,143.70

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Solution

The fourth proportional to 262,247.70, 393,371.55 and 231,143.70 is: 346,715.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,247.70 : 393,371.55 = 231,143.70 : x
  2. Step 2: Convert to fraction form
    262,247.70/393,371.55 = 231,143.70/x
  3. Step 3: Cross multiply
    262,247.70x = 393,371.55 × 231,143.70
  4. Step 4: Simplify right side
    262,247.70x = 90,925,355,541.74
  5. Step 5: Solve for x
    x = 90,925,355,541.74/262,247.70
  6. Step 6: Final answer
    x = 346,715.55

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Similar ratio
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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.