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Finding the Fourth Proportional to 201,816.50, 278,533.50 and 130,404.20

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Solution

The fourth proportional to 201,816.50, 278,533.50 and 130,404.20 is: 179,975.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,816.50 : 278,533.50 = 130,404.20 : x
  2. Step 2: Convert to fraction form
    201,816.50/278,533.50 = 130,404.20/x
  3. Step 3: Cross multiply
    201,816.50x = 278,533.50 × 130,404.20
  4. Step 4: Simplify right side
    201,816.50x = 36,321,938,240.70
  5. Step 5: Solve for x
    x = 36,321,938,240.70/201,816.50
  6. Step 6: Final answer
    x = 179,975.07

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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.