Home / 399,318.40-598,831.80-133,087.60

Finding the Fourth Proportional to 399,318.40, 598,831.80 and 133,087.60

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Solution

The fourth proportional to 399,318.40, 598,831.80 and 133,087.60 is: 199,582.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,318.40 : 598,831.80 = 133,087.60 : x
  2. Step 2: Convert to fraction form
    399,318.40/598,831.80 = 133,087.60/x
  3. Step 3: Cross multiply
    399,318.40x = 598,831.80 × 133,087.60
  4. Step 4: Simplify right side
    399,318.40x = 79,697,087,065.68
  5. Step 5: Solve for x
    x = 79,697,087,065.68/399,318.40
  6. Step 6: Final answer
    x = 199,582.81

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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.