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Finding the Fourth Proportional to 386,082.74, 532,799.44 and 216,313.22

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Solution

The fourth proportional to 386,082.74, 532,799.44 and 216,313.22 is: 298,515.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,082.74 : 532,799.44 = 216,313.22 : x
  2. Step 2: Convert to fraction form
    386,082.74/532,799.44 = 216,313.22/x
  3. Step 3: Cross multiply
    386,082.74x = 532,799.44 × 216,313.22
  4. Step 4: Simplify right side
    386,082.74x = 115,251,562,480.60
  5. Step 5: Solve for x
    x = 115,251,562,480.60/386,082.74
  6. Step 6: Final answer
    x = 298,515.19

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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.