Home / 281,313,240.43-388,207,133.58-155,864,978.86

Finding the Fourth Proportional to 281,313,240.43, 388,207,133.58 and 155,864,978.86

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Solution

The fourth proportional to 281,313,240.43, 388,207,133.58 and 155,864,978.86 is: 215,090,823.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,313,240.43 : 388,207,133.58 = 155,864,978.86 : x
  2. Step 2: Convert to fraction form
    281,313,240.43/388,207,133.58 = 155,864,978.86/x
  3. Step 3: Cross multiply
    281,313,240.43x = 388,207,133.58 × 155,864,978.86
  4. Step 4: Simplify right side
    281,313,240.43x = 60,507,896,668,747,896
  5. Step 5: Solve for x
    x = 60,507,896,668,747,896/281,313,240.43
  6. Step 6: Final answer
    x = 215,090,823.94

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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.