Home / 305,698,378.48-421,859,563.23-173,538,221.20

Finding the Fourth Proportional to 305,698,378.48, 421,859,563.23 and 173,538,221.20

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Solution

The fourth proportional to 305,698,378.48, 421,859,563.23 and 173,538,221.20 is: 239,480,361.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,698,378.48 : 421,859,563.23 = 173,538,221.20 : x
  2. Step 2: Convert to fraction form
    305,698,378.48/421,859,563.23 = 173,538,221.20/x
  3. Step 3: Cross multiply
    305,698,378.48x = 421,859,563.23 × 173,538,221.20
  4. Step 4: Simplify right side
    305,698,378.48x = 73,208,758,199,143,120
  5. Step 5: Solve for x
    x = 73,208,758,199,143,120/305,698,378.48
  6. Step 6: Final answer
    x = 239,480,361.54

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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.