Home / 393,416,923.07-542,962,962.62-223,912,375.60

Finding the Fourth Proportional to 393,416,923.07, 542,962,962.62 and 223,912,375.60

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Solution

The fourth proportional to 393,416,923.07, 542,962,962.62 and 223,912,375.60 is: 309,026,174.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,416,923.07 : 542,962,962.62 = 223,912,375.60 : x
  2. Step 2: Convert to fraction form
    393,416,923.07/542,962,962.62 = 223,912,375.60/x
  3. Step 3: Cross multiply
    393,416,923.07x = 542,962,962.62 × 223,912,375.60
  4. Step 4: Simplify right side
    393,416,923.07x = 121,576,126,823,058,192
  5. Step 5: Solve for x
    x = 121,576,126,823,058,192/393,416,923.07
  6. Step 6: Final answer
    x = 309,026,174.76

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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.