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Finding the Fourth Proportional to 386,161.37, 532,897.55 and 216,398.81

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Solution

The fourth proportional to 386,161.37, 532,897.55 and 216,398.81 is: 298,627.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,161.37 : 532,897.55 = 216,398.81 : x
  2. Step 2: Convert to fraction form
    386,161.37/532,897.55 = 216,398.81/x
  3. Step 3: Cross multiply
    386,161.37x = 532,897.55 × 216,398.81
  4. Step 4: Simplify right side
    386,161.37x = 115,318,394,589.92
  5. Step 5: Solve for x
    x = 115,318,394,589.92/386,161.37
  6. Step 6: Final answer
    x = 298,627.47

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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.