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Finding the Fourth Proportional to 352,429.40, 486,353.11 and 191,284.51

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Solution

The fourth proportional to 352,429.40, 486,353.11 and 191,284.51 is: 263,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,429.40 : 486,353.11 = 191,284.51 : x
  2. Step 2: Convert to fraction form
    352,429.40/486,353.11 = 191,284.51/x
  3. Step 3: Cross multiply
    352,429.40x = 486,353.11 × 191,284.51
  4. Step 4: Simplify right side
    352,429.40x = 93,031,815,909.80
  5. Step 5: Solve for x
    x = 93,031,815,909.80/352,429.40
  6. Step 6: Final answer
    x = 263,972.91

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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.