Home / 258,831.49-388,311.63-205,723.84

Finding the Fourth Proportional to 258,831.49, 388,311.63 and 205,723.84

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Solution

The fourth proportional to 258,831.49, 388,311.63 and 205,723.84 is: 308,636.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,831.49 : 388,311.63 = 205,723.84 : x
  2. Step 2: Convert to fraction form
    258,831.49/388,311.63 = 205,723.84/x
  3. Step 3: Cross multiply
    258,831.49x = 388,311.63 × 205,723.84
  4. Step 4: Simplify right side
    258,831.49x = 79,884,957,898.02
  5. Step 5: Solve for x
    x = 79,884,957,898.02/258,831.49
  6. Step 6: Final answer
    x = 308,636.94

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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.