Home / 209,528.28-289,136.52-117,640.80

Finding the Fourth Proportional to 209,528.28, 289,136.52 and 117,640.80

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Solution

The fourth proportional to 209,528.28, 289,136.52 and 117,640.80 is: 162,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,528.28 : 289,136.52 = 117,640.80 : x
  2. Step 2: Convert to fraction form
    209,528.28/289,136.52 = 117,640.80/x
  3. Step 3: Cross multiply
    209,528.28x = 289,136.52 × 117,640.80
  4. Step 4: Simplify right side
    209,528.28x = 34,014,251,522.02
  5. Step 5: Solve for x
    x = 34,014,251,522.02/209,528.28
  6. Step 6: Final answer
    x = 162,337.28

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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.