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Finding the Fourth Proportional to 209,363.22, 288,986.99 and 118,779.39

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Solution

The fourth proportional to 209,363.22, 288,986.99 and 118,779.39 is: 163,952.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,363.22 : 288,986.99 = 118,779.39 : x
  2. Step 2: Convert to fraction form
    209,363.22/288,986.99 = 118,779.39/x
  3. Step 3: Cross multiply
    209,363.22x = 288,986.99 × 118,779.39
  4. Step 4: Simplify right side
    209,363.22x = 34,325,697,651.60
  5. Step 5: Solve for x
    x = 34,325,697,651.60/209,363.22
  6. Step 6: Final answer
    x = 163,952.86

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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.