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Finding the Fourth Proportional to 352,458.30, 486,390.81 and 191,311.94

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Solution

The fourth proportional to 352,458.30, 486,390.81 and 191,311.94 is: 264,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,458.30 : 486,390.81 = 191,311.94 : x
  2. Step 2: Convert to fraction form
    352,458.30/486,390.81 = 191,311.94/x
  3. Step 3: Cross multiply
    352,458.30x = 486,390.81 × 191,311.94
  4. Step 4: Simplify right side
    352,458.30x = 93,052,367,027.32
  5. Step 5: Solve for x
    x = 93,052,367,027.32/352,458.30
  6. Step 6: Final answer
    x = 264,009.58

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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.