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Finding the Fourth Proportional to 209,554.80, 289,225.50 and 118,919.19

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Solution

The fourth proportional to 209,554.80, 289,225.50 and 118,919.19 is: 164,131.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,554.80 : 289,225.50 = 118,919.19 : x
  2. Step 2: Convert to fraction form
    209,554.80/289,225.50 = 118,919.19/x
  3. Step 3: Cross multiply
    209,554.80x = 289,225.50 × 118,919.19
  4. Step 4: Simplify right side
    209,554.80x = 34,394,462,187.35
  5. Step 5: Solve for x
    x = 34,394,462,187.35/209,554.80
  6. Step 6: Final answer
    x = 164,131.11

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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.