Home / 454,138.40-681,207.60-217,359.20

Finding the Fourth Proportional to 454,138.40, 681,207.60 and 217,359.20

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Solution

The fourth proportional to 454,138.40, 681,207.60 and 217,359.20 is: 326,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,138.40 : 681,207.60 = 217,359.20 : x
  2. Step 2: Convert to fraction form
    454,138.40/681,207.60 = 217,359.20/x
  3. Step 3: Cross multiply
    454,138.40x = 681,207.60 × 217,359.20
  4. Step 4: Simplify right side
    454,138.40x = 148,066,738,969.92
  5. Step 5: Solve for x
    x = 148,066,738,969.92/454,138.40
  6. Step 6: Final answer
    x = 326,038.80

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Similar ratio
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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.