Home / 397,472,139.98-548,485,127.24-221,255,604.57

Finding the Fourth Proportional to 397,472,139.98, 548,485,127.24 and 221,255,604.57

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Solution

The fourth proportional to 397,472,139.98, 548,485,127.24 and 221,255,604.57 is: 305,318,024.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,472,139.98 : 548,485,127.24 = 221,255,604.57 : x
  2. Step 2: Convert to fraction form
    397,472,139.98/548,485,127.24 = 221,255,604.57/x
  3. Step 3: Cross multiply
    397,472,139.98x = 548,485,127.24 × 221,255,604.57
  4. Step 4: Simplify right side
    397,472,139.98x = 121,355,408,424,033,296
  5. Step 5: Solve for x
    x = 121,355,408,424,033,296/397,472,139.98
  6. Step 6: Final answer
    x = 305,318,024.13

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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.