Home / 221,314.20-331,533.90-121,295.40

Finding the Fourth Proportional to 221,314.20, 331,533.90 and 121,295.40

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Solution

The fourth proportional to 221,314.20, 331,533.90 and 121,295.40 is: 181,703.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,314.20 : 331,533.90 = 121,295.40 : x
  2. Step 2: Convert to fraction form
    221,314.20/331,533.90 = 121,295.40/x
  3. Step 3: Cross multiply
    221,314.20x = 331,533.90 × 121,295.40
  4. Step 4: Simplify right side
    221,314.20x = 40,213,537,014.06
  5. Step 5: Solve for x
    x = 40,213,537,014.06/221,314.20
  6. Step 6: Final answer
    x = 181,703.37

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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.