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Finding the Fourth Proportional to 352,629, 528,942.42 and 127,989.12

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Solution

The fourth proportional to 352,629, 528,942.42 and 127,989.12 is: 191,983.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,629 : 528,942.42 = 127,989.12 : x
  2. Step 2: Convert to fraction form
    352,629/528,942.42 = 127,989.12/x
  3. Step 3: Cross multiply
    352,629x = 528,942.42 × 127,989.12
  4. Step 4: Simplify right side
    352,629x = 67,698,874,866.47
  5. Step 5: Solve for x
    x = 67,698,874,866.47/352,629
  6. Step 6: Final answer
    x = 191,983.29

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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.