Home / 209,784.30-289,501.47-114,290.70

Finding the Fourth Proportional to 209,784.30, 289,501.47 and 114,290.70

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Solution

The fourth proportional to 209,784.30, 289,501.47 and 114,290.70 is: 157,720.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,784.30 : 289,501.47 = 114,290.70 : x
  2. Step 2: Convert to fraction form
    209,784.30/289,501.47 = 114,290.70/x
  3. Step 3: Cross multiply
    209,784.30x = 289,501.47 × 114,290.70
  4. Step 4: Simplify right side
    209,784.30x = 33,087,325,657.33
  5. Step 5: Solve for x
    x = 33,087,325,657.33/209,784.30
  6. Step 6: Final answer
    x = 157,720.70

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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.