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Finding the Fourth Proportional to 298,968.57, 448,572.33 and 121,489.47

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Solution

The fourth proportional to 298,968.57, 448,572.33 and 121,489.47 is: 182,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,968.57 : 448,572.33 = 121,489.47 : x
  2. Step 2: Convert to fraction form
    298,968.57/448,572.33 = 121,489.47/x
  3. Step 3: Cross multiply
    298,968.57x = 448,572.33 × 121,489.47
  4. Step 4: Simplify right side
    298,968.57x = 54,496,814,628.37
  5. Step 5: Solve for x
    x = 54,496,814,628.37/298,968.57
  6. Step 6: Final answer
    x = 182,282.76

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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.