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Finding the Fourth Proportional to 259,260, 357,779.04 and 140,028

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Solution

The fourth proportional to 259,260, 357,779.04 and 140,028 is: 193,238.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,260 : 357,779.04 = 140,028 : x
  2. Step 2: Convert to fraction form
    259,260/357,779.04 = 140,028/x
  3. Step 3: Cross multiply
    259,260x = 357,779.04 × 140,028
  4. Step 4: Simplify right side
    259,260x = 50,099,083,413.12
  5. Step 5: Solve for x
    x = 50,099,083,413.12/259,260
  6. Step 6: Final answer
    x = 193,238.77

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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.