Home / 281,235,200.48-388,107,680.78-155,789,317.88

Finding the Fourth Proportional to 281,235,200.48, 388,107,680.78 and 155,789,317.88

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Solution

The fourth proportional to 281,235,200.48, 388,107,680.78 and 155,789,317.88 is: 214,990,978.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,235,200.48 : 388,107,680.78 = 155,789,317.88 : x
  2. Step 2: Convert to fraction form
    281,235,200.48/388,107,680.78 = 155,789,317.88/x
  3. Step 3: Cross multiply
    281,235,200.48x = 388,107,680.78 × 155,789,317.88
  4. Step 4: Simplify right side
    281,235,200.48x = 60,463,030,852,704,984
  5. Step 5: Solve for x
    x = 60,463,030,852,704,984/281,235,200.48
  6. Step 6: Final answer
    x = 214,990,978.19

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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.