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Finding the Fourth Proportional to 386,058.06, 532,781.91 and 216,346.86

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Solution

The fourth proportional to 386,058.06, 532,781.91 and 216,346.86 is: 298,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,058.06 : 532,781.91 = 216,346.86 : x
  2. Step 2: Convert to fraction form
    386,058.06/532,781.91 = 216,346.86/x
  3. Step 3: Cross multiply
    386,058.06x = 532,781.91 × 216,346.86
  4. Step 4: Simplify right side
    386,058.06x = 115,265,693,293.30
  5. Step 5: Solve for x
    x = 115,265,693,293.30/386,058.06
  6. Step 6: Final answer
    x = 298,570.88

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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.