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Finding the Fourth Proportional to 288,991.90, 433,491.03 and 129,075.97

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Solution

The fourth proportional to 288,991.90, 433,491.03 and 129,075.97 is: 193,615.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,991.90 : 433,491.03 = 129,075.97 : x
  2. Step 2: Convert to fraction form
    288,991.90/433,491.03 = 129,075.97/x
  3. Step 3: Cross multiply
    288,991.90x = 433,491.03 × 129,075.97
  4. Step 4: Simplify right side
    288,991.90x = 55,953,275,183.55
  5. Step 5: Solve for x
    x = 55,953,275,183.55/288,991.90
  6. Step 6: Final answer
    x = 193,615.38

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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.