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Finding the Fourth Proportional to 397,586.33, 548,656.63 and 216,293.61

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Solution

The fourth proportional to 397,586.33, 548,656.63 and 216,293.61 is: 298,478.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,586.33 : 548,656.63 = 216,293.61 : x
  2. Step 2: Convert to fraction form
    397,586.33/548,656.63 = 216,293.61/x
  3. Step 3: Cross multiply
    397,586.33x = 548,656.63 × 216,293.61
  4. Step 4: Simplify right side
    397,586.33x = 118,670,922,071.67
  5. Step 5: Solve for x
    x = 118,670,922,071.67/397,586.33
  6. Step 6: Final answer
    x = 298,478.38

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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.