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Finding the Fourth Proportional to 455,201.60, 682,802.40 and 219,005.60

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Solution

The fourth proportional to 455,201.60, 682,802.40 and 219,005.60 is: 328,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,201.60 : 682,802.40 = 219,005.60 : x
  2. Step 2: Convert to fraction form
    455,201.60/682,802.40 = 219,005.60/x
  3. Step 3: Cross multiply
    455,201.60x = 682,802.40 × 219,005.60
  4. Step 4: Simplify right side
    455,201.60x = 149,537,549,293.44
  5. Step 5: Solve for x
    x = 149,537,549,293.44/455,201.60
  6. Step 6: Final answer
    x = 328,508.40

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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.