Home / 209,418.67-289,004.25-118,778.32

Finding the Fourth Proportional to 209,418.67, 289,004.25 and 118,778.32

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Solution

The fourth proportional to 209,418.67, 289,004.25 and 118,778.32 is: 163,917.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,418.67 : 289,004.25 = 118,778.32 : x
  2. Step 2: Convert to fraction form
    209,418.67/289,004.25 = 118,778.32/x
  3. Step 3: Cross multiply
    209,418.67x = 289,004.25 × 118,778.32
  4. Step 4: Simplify right side
    209,418.67x = 34,327,439,287.86
  5. Step 5: Solve for x
    x = 34,327,439,287.86/209,418.67
  6. Step 6: Final answer
    x = 163,917.76

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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.