Home / 209,675.09-289,363.79-157,899.50

Finding the Fourth Proportional to 209,675.09, 289,363.79 and 157,899.50

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Solution

The fourth proportional to 209,675.09, 289,363.79 and 157,899.50 is: 217,910.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,675.09 : 289,363.79 = 157,899.50 : x
  2. Step 2: Convert to fraction form
    209,675.09/289,363.79 = 157,899.50/x
  3. Step 3: Cross multiply
    209,675.09x = 289,363.79 × 157,899.50
  4. Step 4: Simplify right side
    209,675.09x = 45,690,396,969.61
  5. Step 5: Solve for x
    x = 45,690,396,969.61/209,675.09
  6. Step 6: Final answer
    x = 217,910.47

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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.