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Finding the Fourth Proportional to 339,760.15, 509,643.29 and 103,102.82

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Solution

The fourth proportional to 339,760.15, 509,643.29 and 103,102.82 is: 154,655.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,760.15 : 509,643.29 = 103,102.82 : x
  2. Step 2: Convert to fraction form
    339,760.15/509,643.29 = 103,102.82/x
  3. Step 3: Cross multiply
    339,760.15x = 509,643.29 × 103,102.82
  4. Step 4: Simplify right side
    339,760.15x = 52,545,659,877.56
  5. Step 5: Solve for x
    x = 52,545,659,877.56/339,760.15
  6. Step 6: Final answer
    x = 154,655.16

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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.