Home / 285,004,067.20-393,303,970.48-154,621,075.84

Finding the Fourth Proportional to 285,004,067.20, 393,303,970.48 and 154,621,075.84

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Solution

The fourth proportional to 285,004,067.20, 393,303,970.48 and 154,621,075.84 is: 213,376,193.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,004,067.20 : 393,303,970.48 = 154,621,075.84 : x
  2. Step 2: Convert to fraction form
    285,004,067.20/393,303,970.48 = 154,621,075.84/x
  3. Step 3: Cross multiply
    285,004,067.20x = 393,303,970.48 × 154,621,075.84
  4. Step 4: Simplify right side
    285,004,067.20x = 60,813,083,047,761,208
  5. Step 5: Solve for x
    x = 60,813,083,047,761,208/285,004,067.20
  6. Step 6: Final answer
    x = 213,376,193.70

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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.