Home / 290,855.40-436,283.22-91,191.34

Finding the Fourth Proportional to 290,855.40, 436,283.22 and 91,191.34

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Solution

The fourth proportional to 290,855.40, 436,283.22 and 91,191.34 is: 136,787.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,855.40 : 436,283.22 = 91,191.34 : x
  2. Step 2: Convert to fraction form
    290,855.40/436,283.22 = 91,191.34/x
  3. Step 3: Cross multiply
    290,855.40x = 436,283.22 × 91,191.34
  4. Step 4: Simplify right side
    290,855.40x = 39,785,251,451.31
  5. Step 5: Solve for x
    x = 39,785,251,451.31/290,855.40
  6. Step 6: Final answer
    x = 136,787.05

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1.5x scale

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.