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Finding the Fourth Proportional to 352,427.40, 486,354.50 and 191,284.36

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Solution

The fourth proportional to 352,427.40, 486,354.50 and 191,284.36 is: 263,974.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,427.40 : 486,354.50 = 191,284.36 : x
  2. Step 2: Convert to fraction form
    352,427.40/486,354.50 = 191,284.36/x
  3. Step 3: Cross multiply
    352,427.40x = 486,354.50 × 191,284.36
  4. Step 4: Simplify right side
    352,427.40x = 93,032,009,265.62
  5. Step 5: Solve for x
    x = 93,032,009,265.62/352,427.40
  6. Step 6: Final answer
    x = 263,974.96

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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.