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Finding the Fourth Proportional to 322,445.51, 483,667.64 and 85,788.18

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Solution

The fourth proportional to 322,445.51, 483,667.64 and 85,788.18 is: 128,682.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,445.51 : 483,667.64 = 85,788.18 : x
  2. Step 2: Convert to fraction form
    322,445.51/483,667.64 = 85,788.18/x
  3. Step 3: Cross multiply
    322,445.51x = 483,667.64 × 85,788.18
  4. Step 4: Simplify right side
    322,445.51x = 41,492,966,453.26
  5. Step 5: Solve for x
    x = 41,492,966,453.26/322,445.51
  6. Step 6: Final answer
    x = 128,682.10

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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.