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Finding the Fourth Proportional to 493,295, 680,747.70 and 266,940.50

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Solution

The fourth proportional to 493,295, 680,747.70 and 266,940.50 is: 368,378.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,295 : 680,747.70 = 266,940.50 : x
  2. Step 2: Convert to fraction form
    493,295/680,747.70 = 266,940.50/x
  3. Step 3: Cross multiply
    493,295x = 680,747.70 × 266,940.50
  4. Step 4: Simplify right side
    493,295x = 181,719,131,411.85
  5. Step 5: Solve for x
    x = 181,719,131,411.85/493,295
  6. Step 6: Final answer
    x = 368,378.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.