Home / 281,407,727.40-388,342,700.63-155,968,021.94

Finding the Fourth Proportional to 281,407,727.40, 388,342,700.63 and 155,968,021.94

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Solution

The fourth proportional to 281,407,727.40, 388,342,700.63 and 155,968,021.94 is: 215,235,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,407,727.40 : 388,342,700.63 = 155,968,021.94 : x
  2. Step 2: Convert to fraction form
    281,407,727.40/388,342,700.63 = 155,968,021.94/x
  3. Step 3: Cross multiply
    281,407,727.40x = 388,342,700.63 × 155,968,021.94
  4. Step 4: Simplify right side
    281,407,727.40x = 60,569,042,850,838,568
  5. Step 5: Solve for x
    x = 60,569,042,850,838,568/281,407,727.40
  6. Step 6: Final answer
    x = 215,235,890.68

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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.