Home / 221,692,908.52-305,946,876.90-122,571,821.80

Finding the Fourth Proportional to 221,692,908.52, 305,946,876.90 and 122,571,821.80

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Solution

The fourth proportional to 221,692,908.52, 305,946,876.90 and 122,571,821.80 is: 169,155,009.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,692,908.52 : 305,946,876.90 = 122,571,821.80 : x
  2. Step 2: Convert to fraction form
    221,692,908.52/305,946,876.90 = 122,571,821.80/x
  3. Step 3: Cross multiply
    221,692,908.52x = 305,946,876.90 × 122,571,821.80
  4. Step 4: Simplify right side
    221,692,908.52x = 37,500,466,075,653,336
  5. Step 5: Solve for x
    x = 37,500,466,075,653,336/221,692,908.52
  6. Step 6: Final answer
    x = 169,155,009.63

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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.