Home / 221,325,505.56-305,434,052.76-122,205,985.32

Finding the Fourth Proportional to 221,325,505.56, 305,434,052.76 and 122,205,985.32

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Solution

The fourth proportional to 221,325,505.56, 305,434,052.76 and 122,205,985.32 is: 168,646,940.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,325,505.56 : 305,434,052.76 = 122,205,985.32 : x
  2. Step 2: Convert to fraction form
    221,325,505.56/305,434,052.76 = 122,205,985.32/x
  3. Step 3: Cross multiply
    221,325,505.56x = 305,434,052.76 × 122,205,985.32
  4. Step 4: Simplify right side
    221,325,505.56x = 37,325,869,367,816,664
  5. Step 5: Solve for x
    x = 37,325,869,367,816,664/221,325,505.56
  6. Step 6: Final answer
    x = 168,646,940.50

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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.