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Finding the Fourth Proportional to 451,481.85, 623,245.59 and 288,352.31

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Solution

The fourth proportional to 451,481.85, 623,245.59 and 288,352.31 is: 398,054.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,481.85 : 623,245.59 = 288,352.31 : x
  2. Step 2: Convert to fraction form
    451,481.85/623,245.59 = 288,352.31/x
  3. Step 3: Cross multiply
    451,481.85x = 623,245.59 × 288,352.31
  4. Step 4: Simplify right side
    451,481.85x = 179,714,302,457.59
  5. Step 5: Solve for x
    x = 179,714,302,457.59/451,481.85
  6. Step 6: Final answer
    x = 398,054.32

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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.