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Finding the Fourth Proportional to 199,479.26, 299,378.34 and 103,443.76

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Solution

The fourth proportional to 199,479.26, 299,378.34 and 103,443.76 is: 155,248.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,479.26 : 299,378.34 = 103,443.76 : x
  2. Step 2: Convert to fraction form
    199,479.26/299,378.34 = 103,443.76/x
  3. Step 3: Cross multiply
    199,479.26x = 299,378.34 × 103,443.76
  4. Step 4: Simplify right side
    199,479.26x = 30,968,821,152.16
  5. Step 5: Solve for x
    x = 30,968,821,152.16/199,479.26
  6. Step 6: Final answer
    x = 155,248.33

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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.