Home / 281,069,542.66-387,888,090.06-155,621,740.97

Finding the Fourth Proportional to 281,069,542.66, 387,888,090.06 and 155,621,740.97

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Solution

The fourth proportional to 281,069,542.66, 387,888,090.06 and 155,621,740.97 is: 214,764,713.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,069,542.66 : 387,888,090.06 = 155,621,740.97 : x
  2. Step 2: Convert to fraction form
    281,069,542.66/387,888,090.06 = 155,621,740.97/x
  3. Step 3: Cross multiply
    281,069,542.66x = 387,888,090.06 × 155,621,740.97
  4. Step 4: Simplify right side
    281,069,542.66x = 60,363,819,874,725,912
  5. Step 5: Solve for x
    x = 60,363,819,874,725,912/281,069,542.66
  6. Step 6: Final answer
    x = 214,764,713.76

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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.