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Finding the Fourth Proportional to 352,130.40, 528,195.60 and 102,812.40

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Solution

The fourth proportional to 352,130.40, 528,195.60 and 102,812.40 is: 154,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,130.40 : 528,195.60 = 102,812.40 : x
  2. Step 2: Convert to fraction form
    352,130.40/528,195.60 = 102,812.40/x
  3. Step 3: Cross multiply
    352,130.40x = 528,195.60 × 102,812.40
  4. Step 4: Simplify right side
    352,130.40x = 54,305,057,305.44
  5. Step 5: Solve for x
    x = 54,305,057,305.44/352,130.40
  6. Step 6: Final answer
    x = 154,218.60

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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.