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Finding the Fourth Proportional to 283,075.88, 424,636.86 and 80,687.46

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Solution

The fourth proportional to 283,075.88, 424,636.86 and 80,687.46 is: 121,037.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,075.88 : 424,636.86 = 80,687.46 : x
  2. Step 2: Convert to fraction form
    283,075.88/424,636.86 = 80,687.46/x
  3. Step 3: Cross multiply
    283,075.88x = 424,636.86 × 80,687.46
  4. Step 4: Simplify right side
    283,075.88x = 34,262,869,655.78
  5. Step 5: Solve for x
    x = 34,262,869,655.78/283,075.88
  6. Step 6: Final answer
    x = 121,037.76

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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.