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Finding the Fourth Proportional to 201,812.20, 302,718.30 and 180,039.40

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Solution

The fourth proportional to 201,812.20, 302,718.30 and 180,039.40 is: 270,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,812.20 : 302,718.30 = 180,039.40 : x
  2. Step 2: Convert to fraction form
    201,812.20/302,718.30 = 180,039.40/x
  3. Step 3: Cross multiply
    201,812.20x = 302,718.30 × 180,039.40
  4. Step 4: Simplify right side
    201,812.20x = 54,501,221,101.02
  5. Step 5: Solve for x
    x = 54,501,221,101.02/201,812.20
  6. Step 6: Final answer
    x = 270,059.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.