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Finding the Fourth Proportional to 386,161.12, 532,897.20 and 216,398.56

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Solution

The fourth proportional to 386,161.12, 532,897.20 and 216,398.56 is: 298,627.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,161.12 : 532,897.20 = 216,398.56 : x
  2. Step 2: Convert to fraction form
    386,161.12/532,897.20 = 216,398.56/x
  3. Step 3: Cross multiply
    386,161.12x = 532,897.20 × 216,398.56
  4. Step 4: Simplify right side
    386,161.12x = 115,318,186,708.03
  5. Step 5: Solve for x
    x = 115,318,186,708.03/386,161.12
  6. Step 6: Final answer
    x = 298,627.13

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