Home / 290,124,029.76-400,380,987.36-157,970,151.60

Finding the Fourth Proportional to 290,124,029.76, 400,380,987.36 and 157,970,151.60

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Solution

The fourth proportional to 290,124,029.76, 400,380,987.36 and 157,970,151.60 is: 218,004,159.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,124,029.76 : 400,380,987.36 = 157,970,151.60 : x
  2. Step 2: Convert to fraction form
    290,124,029.76/400,380,987.36 = 157,970,151.60/x
  3. Step 3: Cross multiply
    290,124,029.76x = 400,380,987.36 × 157,970,151.60
  4. Step 4: Simplify right side
    290,124,029.76x = 63,248,245,271,016,880
  5. Step 5: Solve for x
    x = 63,248,245,271,016,880/290,124,029.76
  6. Step 6: Final answer
    x = 218,004,159.54

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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.