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Finding the Fourth Proportional to 589,408.50, 884,112.75 and 215,431.50

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Solution

The fourth proportional to 589,408.50, 884,112.75 and 215,431.50 is: 323,147.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,408.50 : 884,112.75 = 215,431.50 : x
  2. Step 2: Convert to fraction form
    589,408.50/884,112.75 = 215,431.50/x
  3. Step 3: Cross multiply
    589,408.50x = 884,112.75 × 215,431.50
  4. Step 4: Simplify right side
    589,408.50x = 190,465,735,901.63
  5. Step 5: Solve for x
    x = 190,465,735,901.63/589,408.50
  6. Step 6: Final answer
    x = 323,147.25

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Double scale
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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.