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Finding the Fourth Proportional to 297,778,907.20, 446,668,360.80 and 90,516,917.20

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Solution

The fourth proportional to 297,778,907.20, 446,668,360.80 and 90,516,917.20 is: 135,775,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,778,907.20 : 446,668,360.80 = 90,516,917.20 : x
  2. Step 2: Convert to fraction form
    297,778,907.20/446,668,360.80 = 90,516,917.20/x
  3. Step 3: Cross multiply
    297,778,907.20x = 446,668,360.80 × 90,516,917.20
  4. Step 4: Simplify right side
    297,778,907.20x = 40,431,043,030,393,328
  5. Step 5: Solve for x
    x = 40,431,043,030,393,328/297,778,907.20
  6. Step 6: Final answer
    x = 135,775,375.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.