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Finding the Fourth Proportional to 275,328.40, 412,992.60 and 191,347.60

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Solution

The fourth proportional to 275,328.40, 412,992.60 and 191,347.60 is: 287,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,328.40 : 412,992.60 = 191,347.60 : x
  2. Step 2: Convert to fraction form
    275,328.40/412,992.60 = 191,347.60/x
  3. Step 3: Cross multiply
    275,328.40x = 412,992.60 × 191,347.60
  4. Step 4: Simplify right side
    275,328.40x = 79,025,142,827.76
  5. Step 5: Solve for x
    x = 79,025,142,827.76/275,328.40
  6. Step 6: Final answer
    x = 287,021.40

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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.