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Finding the Fourth Proportional to 217,412.80, 326,119.20 and 201,666.40

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Solution

The fourth proportional to 217,412.80, 326,119.20 and 201,666.40 is: 302,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,412.80 : 326,119.20 = 201,666.40 : x
  2. Step 2: Convert to fraction form
    217,412.80/326,119.20 = 201,666.40/x
  3. Step 3: Cross multiply
    217,412.80x = 326,119.20 × 201,666.40
  4. Step 4: Simplify right side
    217,412.80x = 65,767,285,034.88
  5. Step 5: Solve for x
    x = 65,767,285,034.88/217,412.80
  6. Step 6: Final answer
    x = 302,499.60

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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.