Home / 290,505.36-435,758.38-90,826.79

Finding the Fourth Proportional to 290,505.36, 435,758.38 and 90,826.79

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Solution

The fourth proportional to 290,505.36, 435,758.38 and 90,826.79 is: 136,240.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,505.36 : 435,758.38 = 90,826.79 : x
  2. Step 2: Convert to fraction form
    290,505.36/435,758.38 = 90,826.79/x
  3. Step 3: Cross multiply
    290,505.36x = 435,758.38 × 90,826.79
  4. Step 4: Simplify right side
    290,505.36x = 39,578,536,652.75
  5. Step 5: Solve for x
    x = 39,578,536,652.75/290,505.36
  6. Step 6: Final answer
    x = 136,240.30

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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.