Home / 290,382.28-435,586.38-90,706.60

Finding the Fourth Proportional to 290,382.28, 435,586.38 and 90,706.60

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Solution

The fourth proportional to 290,382.28, 435,586.38 and 90,706.60 is: 136,063.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,382.28 : 435,586.38 = 90,706.60 : x
  2. Step 2: Convert to fraction form
    290,382.28/435,586.38 = 90,706.60/x
  3. Step 3: Cross multiply
    290,382.28x = 435,586.38 × 90,706.60
  4. Step 4: Simplify right side
    290,382.28x = 39,510,559,536.11
  5. Step 5: Solve for x
    x = 39,510,559,536.11/290,382.28
  6. Step 6: Final answer
    x = 136,063.95

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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.