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Finding the Fourth Proportional to 100,291.69, 150,447.12 and 28,244.42

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Solution

The fourth proportional to 100,291.69, 150,447.12 and 28,244.42 is: 42,369.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,291.69 : 150,447.12 = 28,244.42 : x
  2. Step 2: Convert to fraction form
    100,291.69/150,447.12 = 28,244.42/x
  3. Step 3: Cross multiply
    100,291.69x = 150,447.12 × 28,244.42
  4. Step 4: Simplify right side
    100,291.69x = 4,249,291,645.07
  5. Step 5: Solve for x
    x = 4,249,291,645.07/100,291.69
  6. Step 6: Final answer
    x = 42,369.33

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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.