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Finding the Fourth Proportional to 505,699.80, 758,660.48 and 190,156.71

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Solution

The fourth proportional to 505,699.80, 758,660.48 and 190,156.71 is: 285,276.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,699.80 : 758,660.48 = 190,156.71 : x
  2. Step 2: Convert to fraction form
    505,699.80/758,660.48 = 190,156.71/x
  3. Step 3: Cross multiply
    505,699.80x = 758,660.48 × 190,156.71
  4. Step 4: Simplify right side
    505,699.80x = 144,264,379,933.04
  5. Step 5: Solve for x
    x = 144,264,379,933.04/505,699.80
  6. Step 6: Final answer
    x = 285,276.72

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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.