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Finding the Fourth Proportional to 290,217.28, 435,162.56 and 100,588.80

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Solution

The fourth proportional to 290,217.28, 435,162.56 and 100,588.80 is: 150,826.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,217.28 : 435,162.56 = 100,588.80 : x
  2. Step 2: Convert to fraction form
    290,217.28/435,162.56 = 100,588.80/x
  3. Step 3: Cross multiply
    290,217.28x = 435,162.56 × 100,588.80
  4. Step 4: Simplify right side
    290,217.28x = 43,772,479,715.33
  5. Step 5: Solve for x
    x = 43,772,479,715.33/290,217.28
  6. Step 6: Final answer
    x = 150,826.58

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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.