Home / 221,378,140.80-332,208,928.80-129,261,700.80

Finding the Fourth Proportional to 221,378,140.80, 332,208,928.80 and 129,261,700.80

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Solution

The fourth proportional to 221,378,140.80, 332,208,928.80 and 129,261,700.80 is: 193,975,299.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,378,140.80 : 332,208,928.80 = 129,261,700.80 : x
  2. Step 2: Convert to fraction form
    221,378,140.80/332,208,928.80 = 129,261,700.80/x
  3. Step 3: Cross multiply
    221,378,140.80x = 332,208,928.80 × 129,261,700.80
  4. Step 4: Simplify right side
    221,378,140.80x = 42,941,891,157,634,104
  5. Step 5: Solve for x
    x = 42,941,891,157,634,104/221,378,140.80
  6. Step 6: Final answer
    x = 193,975,299.47

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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.