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Finding the Fourth Proportional to 275,585.88, 380,313.18 and 153,075

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Solution

The fourth proportional to 275,585.88, 380,313.18 and 153,075 is: 211,246.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,585.88 : 380,313.18 = 153,075 : x
  2. Step 2: Convert to fraction form
    275,585.88/380,313.18 = 153,075/x
  3. Step 3: Cross multiply
    275,585.88x = 380,313.18 × 153,075
  4. Step 4: Simplify right side
    275,585.88x = 58,216,440,028.50
  5. Step 5: Solve for x
    x = 58,216,440,028.50/275,585.88
  6. Step 6: Final answer
    x = 211,246.09

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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.