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Finding the Fourth Proportional to 322,051.19, 483,076.78 and 85,412.32

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Solution

The fourth proportional to 322,051.19, 483,076.78 and 85,412.32 is: 128,118.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,051.19 : 483,076.78 = 85,412.32 : x
  2. Step 2: Convert to fraction form
    322,051.19/483,076.78 = 85,412.32/x
  3. Step 3: Cross multiply
    322,051.19x = 483,076.78 × 85,412.32
  4. Step 4: Simplify right side
    322,051.19x = 41,260,707,096.71
  5. Step 5: Solve for x
    x = 41,260,707,096.71/322,051.19
  6. Step 6: Final answer
    x = 128,118.48

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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.