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Finding the Fourth Proportional to 352,447.29, 486,630.02 and 216,663.29

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Solution

The fourth proportional to 352,447.29, 486,630.02 and 216,663.29 is: 299,150.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,447.29 : 486,630.02 = 216,663.29 : x
  2. Step 2: Convert to fraction form
    352,447.29/486,630.02 = 216,663.29/x
  3. Step 3: Cross multiply
    352,447.29x = 486,630.02 × 216,663.29
  4. Step 4: Simplify right side
    352,447.29x = 105,434,860,062.65
  5. Step 5: Solve for x
    x = 105,434,860,062.65/352,447.29
  6. Step 6: Final answer
    x = 299,150.72

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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.