Home / 309,765,725-427,507,580.19-231,313,075.98

Finding the Fourth Proportional to 309,765,725, 427,507,580.19 and 231,313,075.98

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Solution

The fourth proportional to 309,765,725, 427,507,580.19 and 231,313,075.98 is: 319,235,103.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,765,725 : 427,507,580.19 = 231,313,075.98 : x
  2. Step 2: Convert to fraction form
    309,765,725/427,507,580.19 = 231,313,075.98/x
  3. Step 3: Cross multiply
    309,765,725x = 427,507,580.19 × 231,313,075.98
  4. Step 4: Simplify right side
    309,765,725x = 98,888,093,378,515,408
  5. Step 5: Solve for x
    x = 98,888,093,378,515,408/309,765,725
  6. Step 6: Final answer
    x = 319,235,103.81

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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.