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Finding the Fourth Proportional to 505,180.76, 697,138.80 and 275,730.44

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Solution

The fourth proportional to 505,180.76, 697,138.80 and 275,730.44 is: 380,502.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,180.76 : 697,138.80 = 275,730.44 : x
  2. Step 2: Convert to fraction form
    505,180.76/697,138.80 = 275,730.44/x
  3. Step 3: Cross multiply
    505,180.76x = 697,138.80 × 275,730.44
  4. Step 4: Simplify right side
    505,180.76x = 192,222,388,065.07
  5. Step 5: Solve for x
    x = 192,222,388,065.07/505,180.76
  6. Step 6: Final answer
    x = 380,502.20

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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.