Home / 209,310.28-288,813.14-123,286.40

Finding the Fourth Proportional to 209,310.28, 288,813.14 and 123,286.40

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Solution

The fourth proportional to 209,310.28, 288,813.14 and 123,286.40 is: 170,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,310.28 : 288,813.14 = 123,286.40 : x
  2. Step 2: Convert to fraction form
    209,310.28/288,813.14 = 123,286.40/x
  3. Step 3: Cross multiply
    209,310.28x = 288,813.14 × 123,286.40
  4. Step 4: Simplify right side
    209,310.28x = 35,606,734,106.23
  5. Step 5: Solve for x
    x = 35,606,734,106.23/209,310.28
  6. Step 6: Final answer
    x = 170,114.60

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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.