Home / 330,021.60-455,351.75-186,781.64

Finding the Fourth Proportional to 330,021.60, 455,351.75 and 186,781.64

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Solution

The fourth proportional to 330,021.60, 455,351.75 and 186,781.64 is: 257,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,021.60 : 455,351.75 = 186,781.64 : x
  2. Step 2: Convert to fraction form
    330,021.60/455,351.75 = 186,781.64/x
  3. Step 3: Cross multiply
    330,021.60x = 455,351.75 × 186,781.64
  4. Step 4: Simplify right side
    330,021.60x = 85,051,343,431.20
  5. Step 5: Solve for x
    x = 85,051,343,431.20/330,021.60
  6. Step 6: Final answer
    x = 257,714.48

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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.