Home / 209,715.71-289,315.55-141,707.84

Finding the Fourth Proportional to 209,715.71, 289,315.55 and 141,707.84

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Solution

The fourth proportional to 209,715.71, 289,315.55 and 141,707.84 is: 195,494.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,715.71 : 289,315.55 = 141,707.84 : x
  2. Step 2: Convert to fraction form
    209,715.71/289,315.55 = 141,707.84/x
  3. Step 3: Cross multiply
    209,715.71x = 289,315.55 × 141,707.84
  4. Step 4: Simplify right side
    209,715.71x = 40,998,280,576.60
  5. Step 5: Solve for x
    x = 40,998,280,576.60/209,715.71
  6. Step 6: Final answer
    x = 195,494.57

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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.