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Finding the Fourth Proportional to 262,409.70, 393,906.15 and 144,311.70

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Solution

The fourth proportional to 262,409.70, 393,906.15 and 144,311.70 is: 216,627.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,409.70 : 393,906.15 = 144,311.70 : x
  2. Step 2: Convert to fraction form
    262,409.70/393,906.15 = 144,311.70/x
  3. Step 3: Cross multiply
    262,409.70x = 393,906.15 × 144,311.70
  4. Step 4: Simplify right side
    262,409.70x = 56,845,266,146.96
  5. Step 5: Solve for x
    x = 56,845,266,146.96/262,409.70
  6. Step 6: Final answer
    x = 216,627.91

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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.