Home / 289,515.47-434,273.38-79,137.59

Finding the Fourth Proportional to 289,515.47, 434,273.38 and 79,137.59

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Solution

The fourth proportional to 289,515.47, 434,273.38 and 79,137.59 is: 118,706.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,515.47 : 434,273.38 = 79,137.59 : x
  2. Step 2: Convert to fraction form
    289,515.47/434,273.38 = 79,137.59/x
  3. Step 3: Cross multiply
    289,515.47x = 434,273.38 × 79,137.59
  4. Step 4: Simplify right side
    289,515.47x = 34,367,348,694.35
  5. Step 5: Solve for x
    x = 34,367,348,694.35/289,515.47
  6. Step 6: Final answer
    x = 118,706.43

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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.