Home / 209,606.78-288,616.70-157,998.85

Finding the Fourth Proportional to 209,606.78, 288,616.70 and 157,998.85

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Solution

The fourth proportional to 209,606.78, 288,616.70 and 157,998.85 is: 217,555.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,606.78 : 288,616.70 = 157,998.85 : x
  2. Step 2: Convert to fraction form
    209,606.78/288,616.70 = 157,998.85/x
  3. Step 3: Cross multiply
    209,606.78x = 288,616.70 × 157,998.85
  4. Step 4: Simplify right side
    209,606.78x = 45,601,106,364.25
  5. Step 5: Solve for x
    x = 45,601,106,364.25/209,606.78
  6. Step 6: Final answer
    x = 217,555.49

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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.