Home / 405,981.21-608,805.30-121,571.58

Finding the Fourth Proportional to 405,981.21, 608,805.30 and 121,571.58

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Solution

The fourth proportional to 405,981.21, 608,805.30 and 121,571.58 is: 182,307.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,981.21 : 608,805.30 = 121,571.58 : x
  2. Step 2: Convert to fraction form
    405,981.21/608,805.30 = 121,571.58/x
  3. Step 3: Cross multiply
    405,981.21x = 608,805.30 × 121,571.58
  4. Step 4: Simplify right side
    405,981.21x = 74,013,422,233.37
  5. Step 5: Solve for x
    x = 74,013,422,233.37/405,981.21
  6. Step 6: Final answer
    x = 182,307.51

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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.