Home / 218,816.80-328,225.20-201,709.60

Finding the Fourth Proportional to 218,816.80, 328,225.20 and 201,709.60

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Solution

The fourth proportional to 218,816.80, 328,225.20 and 201,709.60 is: 302,564.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,816.80 : 328,225.20 = 201,709.60 : x
  2. Step 2: Convert to fraction form
    218,816.80/328,225.20 = 201,709.60/x
  3. Step 3: Cross multiply
    218,816.80x = 328,225.20 × 201,709.60
  4. Step 4: Simplify right side
    218,816.80x = 66,206,173,801.92
  5. Step 5: Solve for x
    x = 66,206,173,801.92/218,816.80
  6. Step 6: Final answer
    x = 302,564.40

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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.