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Finding the Fourth Proportional to 388,285.93, 535,729.96 and 227,180.57

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Solution

The fourth proportional to 388,285.93, 535,729.96 and 227,180.57 is: 313,447.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,285.93 : 535,729.96 = 227,180.57 : x
  2. Step 2: Convert to fraction form
    388,285.93/535,729.96 = 227,180.57/x
  3. Step 3: Cross multiply
    388,285.93x = 535,729.96 × 227,180.57
  4. Step 4: Simplify right side
    388,285.93x = 121,707,437,678.88
  5. Step 5: Solve for x
    x = 121,707,437,678.88/388,285.93
  6. Step 6: Final answer
    x = 313,447.97

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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.