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Finding the Fourth Proportional to 202,019.54, 278,788.91 and 111,379.05

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Solution

The fourth proportional to 202,019.54, 278,788.91 and 111,379.05 is: 153,704.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,019.54 : 278,788.91 = 111,379.05 : x
  2. Step 2: Convert to fraction form
    202,019.54/278,788.91 = 111,379.05/x
  3. Step 3: Cross multiply
    202,019.54x = 278,788.91 × 111,379.05
  4. Step 4: Simplify right side
    202,019.54x = 31,051,243,389.44
  5. Step 5: Solve for x
    x = 31,051,243,389.44/202,019.54
  6. Step 6: Final answer
    x = 153,704.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.