Home / 257,538.42-386,413.92-139,070.25

Finding the Fourth Proportional to 257,538.42, 386,413.92 and 139,070.25

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Solution

The fourth proportional to 257,538.42, 386,413.92 and 139,070.25 is: 208,662.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,538.42 : 386,413.92 = 139,070.25 : x
  2. Step 2: Convert to fraction form
    257,538.42/386,413.92 = 139,070.25/x
  3. Step 3: Cross multiply
    257,538.42x = 386,413.92 × 139,070.25
  4. Step 4: Simplify right side
    257,538.42x = 53,738,680,457.88
  5. Step 5: Solve for x
    x = 53,738,680,457.88/257,538.42
  6. Step 6: Final answer
    x = 208,662.77

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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.