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Finding the Fourth Proportional to 254,739.60, 382,012.20 and 77,187.60

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Solution

The fourth proportional to 254,739.60, 382,012.20 and 77,187.60 is: 115,751.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,739.60 : 382,012.20 = 77,187.60 : x
  2. Step 2: Convert to fraction form
    254,739.60/382,012.20 = 77,187.60/x
  3. Step 3: Cross multiply
    254,739.60x = 382,012.20 × 77,187.60
  4. Step 4: Simplify right side
    254,739.60x = 29,486,604,888.72
  5. Step 5: Solve for x
    x = 29,486,604,888.72/254,739.60
  6. Step 6: Final answer
    x = 115,751.95

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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.