Home / 239,409.40-330,385.97-131,977.07

Finding the Fourth Proportional to 239,409.40, 330,385.97 and 131,977.07

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Solution

The fourth proportional to 239,409.40, 330,385.97 and 131,977.07 is: 182,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,409.40 : 330,385.97 = 131,977.07 : x
  2. Step 2: Convert to fraction form
    239,409.40/330,385.97 = 131,977.07/x
  3. Step 3: Cross multiply
    239,409.40x = 330,385.97 × 131,977.07
  4. Step 4: Simplify right side
    239,409.40x = 43,603,373,693.63
  5. Step 5: Solve for x
    x = 43,603,373,693.63/239,409.40
  6. Step 6: Final answer
    x = 182,128.91

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1.5x scale

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.