Home / 209,411.87-288,988.16-113,918.33

Finding the Fourth Proportional to 209,411.87, 288,988.16 and 113,918.33

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Solution

The fourth proportional to 209,411.87, 288,988.16 and 113,918.33 is: 157,207.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,411.87 : 288,988.16 = 113,918.33 : x
  2. Step 2: Convert to fraction form
    209,411.87/288,988.16 = 113,918.33/x
  3. Step 3: Cross multiply
    209,411.87x = 288,988.16 × 113,918.33
  4. Step 4: Simplify right side
    209,411.87x = 32,921,048,729.85
  5. Step 5: Solve for x
    x = 32,921,048,729.85/209,411.87
  6. Step 6: Final answer
    x = 157,207.18

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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.