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Finding the Fourth Proportional to 352,005.20, 528,007.80 and 102,654.80

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Solution

The fourth proportional to 352,005.20, 528,007.80 and 102,654.80 is: 153,982.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,005.20 : 528,007.80 = 102,654.80 : x
  2. Step 2: Convert to fraction form
    352,005.20/528,007.80 = 102,654.80/x
  3. Step 3: Cross multiply
    352,005.20x = 528,007.80 × 102,654.80
  4. Step 4: Simplify right side
    352,005.20x = 54,202,535,107.44
  5. Step 5: Solve for x
    x = 54,202,535,107.44/352,005.20
  6. Step 6: Final answer
    x = 153,982.20

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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.