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Finding the Fourth Proportional to 265,738,297.20, 398,607,445.80 and 143,294,290.80

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Solution

The fourth proportional to 265,738,297.20, 398,607,445.80 and 143,294,290.80 is: 214,941,436.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,738,297.20 : 398,607,445.80 = 143,294,290.80 : x
  2. Step 2: Convert to fraction form
    265,738,297.20/398,607,445.80 = 143,294,290.80/x
  3. Step 3: Cross multiply
    265,738,297.20x = 398,607,445.80 × 143,294,290.80
  4. Step 4: Simplify right side
    265,738,297.20x = 57,118,171,253,510,448
  5. Step 5: Solve for x
    x = 57,118,171,253,510,448/265,738,297.20
  6. Step 6: Final answer
    x = 214,941,436.20

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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.