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Finding the Fourth Proportional to 386,061.06, 532,786.05 and 216,349.86

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Solution

The fourth proportional to 386,061.06, 532,786.05 and 216,349.86 is: 298,575.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,061.06 : 532,786.05 = 216,349.86 : x
  2. Step 2: Convert to fraction form
    386,061.06/532,786.05 = 216,349.86/x
  3. Step 3: Cross multiply
    386,061.06x = 532,786.05 × 216,349.86
  4. Step 4: Simplify right side
    386,061.06x = 115,268,187,327.45
  5. Step 5: Solve for x
    x = 115,268,187,327.45/386,061.06
  6. Step 6: Final answer
    x = 298,575.02

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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.