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Finding the Fourth Proportional to 260,756.56, 391,131.54 and 83,261.32

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Solution

The fourth proportional to 260,756.56, 391,131.54 and 83,261.32 is: 124,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,756.56 : 391,131.54 = 83,261.32 : x
  2. Step 2: Convert to fraction form
    260,756.56/391,131.54 = 83,261.32/x
  3. Step 3: Cross multiply
    260,756.56x = 391,131.54 × 83,261.32
  4. Step 4: Simplify right side
    260,756.56x = 32,566,128,314.03
  5. Step 5: Solve for x
    x = 32,566,128,314.03/260,756.56
  6. Step 6: Final answer
    x = 124,890.93

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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.