Home / 219,821,187.56-329,732,918.30-128,881,003.72

Finding the Fourth Proportional to 219,821,187.56, 329,732,918.30 and 128,881,003.72

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Solution

The fourth proportional to 219,821,187.56, 329,732,918.30 and 128,881,003.72 is: 193,322,172.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,821,187.56 : 329,732,918.30 = 128,881,003.72 : x
  2. Step 2: Convert to fraction form
    219,821,187.56/329,732,918.30 = 128,881,003.72/x
  3. Step 3: Cross multiply
    219,821,187.56x = 329,732,918.30 × 128,881,003.72
  4. Step 4: Simplify right side
    219,821,187.56x = 42,496,309,470,028,760
  5. Step 5: Solve for x
    x = 42,496,309,470,028,760/219,821,187.56
  6. Step 6: Final answer
    x = 193,322,172.18

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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.