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Finding the Fourth Proportional to 454,758.40, 682,137.60 and 188,430.40

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Solution

The fourth proportional to 454,758.40, 682,137.60 and 188,430.40 is: 282,645.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,758.40 : 682,137.60 = 188,430.40 : x
  2. Step 2: Convert to fraction form
    454,758.40/682,137.60 = 188,430.40/x
  3. Step 3: Cross multiply
    454,758.40x = 682,137.60 × 188,430.40
  4. Step 4: Simplify right side
    454,758.40x = 128,535,460,823.04
  5. Step 5: Solve for x
    x = 128,535,460,823.04/454,758.40
  6. Step 6: Final answer
    x = 282,645.60

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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.