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Finding the Fourth Proportional to 352,460.56, 486,648.34 and 216,676.55

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Solution

The fourth proportional to 352,460.56, 486,648.34 and 216,676.55 is: 299,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,460.56 : 486,648.34 = 216,676.55 : x
  2. Step 2: Convert to fraction form
    352,460.56/486,648.34 = 216,676.55/x
  3. Step 3: Cross multiply
    352,460.56x = 486,648.34 × 216,676.55
  4. Step 4: Simplify right side
    352,460.56x = 105,445,279,857.80
  5. Step 5: Solve for x
    x = 105,445,279,857.80/352,460.56
  6. Step 6: Final answer
    x = 299,169.02

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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.