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Finding the Fourth Proportional to 323,546.85, 485,320.28 and 266,466.15

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Solution

The fourth proportional to 323,546.85, 485,320.28 and 266,466.15 is: 399,699.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,546.85 : 485,320.28 = 266,466.15 : x
  2. Step 2: Convert to fraction form
    323,546.85/485,320.28 = 266,466.15/x
  3. Step 3: Cross multiply
    323,546.85x = 485,320.28 × 266,466.15
  4. Step 4: Simplify right side
    323,546.85x = 129,321,425,196.19
  5. Step 5: Solve for x
    x = 129,321,425,196.19/323,546.85
  6. Step 6: Final answer
    x = 399,699.23

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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.