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Finding the Fourth Proportional to 209,312.87, 288,842.97 and 118,674.93

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Solution

The fourth proportional to 209,312.87, 288,842.97 and 118,674.93 is: 163,766.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,312.87 : 288,842.97 = 118,674.93 : x
  2. Step 2: Convert to fraction form
    209,312.87/288,842.97 = 118,674.93/x
  3. Step 3: Cross multiply
    209,312.87x = 288,842.97 × 118,674.93
  4. Step 4: Simplify right side
    209,312.87x = 34,278,419,245.74
  5. Step 5: Solve for x
    x = 34,278,419,245.74/209,312.87
  6. Step 6: Final answer
    x = 163,766.42

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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.