Home / 208,442.31-312,586.88-71,626.61

Finding the Fourth Proportional to 208,442.31, 312,586.88 and 71,626.61

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Solution

The fourth proportional to 208,442.31, 312,586.88 and 71,626.61 is: 107,413.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,442.31 : 312,586.88 = 71,626.61 : x
  2. Step 2: Convert to fraction form
    208,442.31/312,586.88 = 71,626.61/x
  3. Step 3: Cross multiply
    208,442.31x = 312,586.88 × 71,626.61
  4. Step 4: Simplify right side
    208,442.31x = 22,389,539,102.51
  5. Step 5: Solve for x
    x = 22,389,539,102.51/208,442.31
  6. Step 6: Final answer
    x = 107,413.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.