Home / 345,997,690.72-477,478,078.56-187,227,815.20

Finding the Fourth Proportional to 345,997,690.72, 477,478,078.56 and 187,227,815.20

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Solution

The fourth proportional to 345,997,690.72, 477,478,078.56 and 187,227,815.20 is: 258,375,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,997,690.72 : 477,478,078.56 = 187,227,815.20 : x
  2. Step 2: Convert to fraction form
    345,997,690.72/477,478,078.56 = 187,227,815.20/x
  3. Step 3: Cross multiply
    345,997,690.72x = 477,478,078.56 × 187,227,815.20
  4. Step 4: Simplify right side
    345,997,690.72x = 89,397,177,454,682,752
  5. Step 5: Solve for x
    x = 89,397,177,454,682,752/345,997,690.72
  6. Step 6: Final answer
    x = 258,375,069.70

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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.