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Finding the Fourth Proportional to 262,640.61, 393,329.36 and 149,979.35

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Solution

The fourth proportional to 262,640.61, 393,329.36 and 149,979.35 is: 224,608.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,640.61 : 393,329.36 = 149,979.35 : x
  2. Step 2: Convert to fraction form
    262,640.61/393,329.36 = 149,979.35/x
  3. Step 3: Cross multiply
    262,640.61x = 393,329.36 × 149,979.35
  4. Step 4: Simplify right side
    262,640.61x = 58,991,282,803.55
  5. Step 5: Solve for x
    x = 58,991,282,803.55/262,640.61
  6. Step 6: Final answer
    x = 224,608.39

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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.