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Finding the Fourth Proportional to 352,519.86, 486,007.63 and 280,164.35

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Solution

The fourth proportional to 352,519.86, 486,007.63 and 280,164.35 is: 386,253.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,519.86 : 486,007.63 = 280,164.35 : x
  2. Step 2: Convert to fraction form
    352,519.86/486,007.63 = 280,164.35/x
  3. Step 3: Cross multiply
    352,519.86x = 486,007.63 × 280,164.35
  4. Step 4: Simplify right side
    352,519.86x = 136,162,012,268.60
  5. Step 5: Solve for x
    x = 136,162,012,268.60/352,519.86
  6. Step 6: Final answer
    x = 386,253.45

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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.