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Finding the Fourth Proportional to 505,611.76, 758,420.48 and 168,651.50

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Solution

The fourth proportional to 505,611.76, 758,420.48 and 168,651.50 is: 252,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,611.76 : 758,420.48 = 168,651.50 : x
  2. Step 2: Convert to fraction form
    505,611.76/758,420.48 = 168,651.50/x
  3. Step 3: Cross multiply
    505,611.76x = 758,420.48 × 168,651.50
  4. Step 4: Simplify right side
    505,611.76x = 127,908,751,582.72
  5. Step 5: Solve for x
    x = 127,908,751,582.72/505,611.76
  6. Step 6: Final answer
    x = 252,978.20

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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.