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Finding the Fourth Proportional to 261,101.68, 391,672.46 and 111,342.60

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Solution

The fourth proportional to 261,101.68, 391,672.46 and 111,342.60 is: 167,022.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,101.68 : 391,672.46 = 111,342.60 : x
  2. Step 2: Convert to fraction form
    261,101.68/391,672.46 = 111,342.60/x
  3. Step 3: Cross multiply
    261,101.68x = 391,672.46 × 111,342.60
  4. Step 4: Simplify right side
    261,101.68x = 43,609,830,323.15
  5. Step 5: Solve for x
    x = 43,609,830,323.15/261,101.68
  6. Step 6: Final answer
    x = 167,022.41

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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.