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Finding the Fourth Proportional to 450,188.08, 621,450.86 and 280,506.04

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Solution

The fourth proportional to 450,188.08, 621,450.86 and 280,506.04 is: 387,217.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,188.08 : 621,450.86 = 280,506.04 : x
  2. Step 2: Convert to fraction form
    450,188.08/621,450.86 = 280,506.04/x
  3. Step 3: Cross multiply
    450,188.08x = 621,450.86 × 280,506.04
  4. Step 4: Simplify right side
    450,188.08x = 174,320,719,793.19
  5. Step 5: Solve for x
    x = 174,320,719,793.19/450,188.08
  6. Step 6: Final answer
    x = 387,217.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.