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Finding the Fourth Proportional to 505,385.87, 697,442.21 and 275,952.25

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Solution

The fourth proportional to 505,385.87, 697,442.21 and 275,952.25 is: 380,819.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,385.87 : 697,442.21 = 275,952.25 : x
  2. Step 2: Convert to fraction form
    505,385.87/697,442.21 = 275,952.25/x
  3. Step 3: Cross multiply
    505,385.87x = 697,442.21 × 275,952.25
  4. Step 4: Simplify right side
    505,385.87x = 192,460,749,173.57
  5. Step 5: Solve for x
    x = 192,460,749,173.57/505,385.87
  6. Step 6: Final answer
    x = 380,819.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.