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Finding the Fourth Proportional to 275,405.40, 412,569.54 and 190,003.05

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Solution

The fourth proportional to 275,405.40, 412,569.54 and 190,003.05 is: 284,633.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,405.40 : 412,569.54 = 190,003.05 : x
  2. Step 2: Convert to fraction form
    275,405.40/412,569.54 = 190,003.05/x
  3. Step 3: Cross multiply
    275,405.40x = 412,569.54 × 190,003.05
  4. Step 4: Simplify right side
    275,405.40x = 78,389,470,937.10
  5. Step 5: Solve for x
    x = 78,389,470,937.10/275,405.40
  6. Step 6: Final answer
    x = 284,633.02

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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.