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Finding the Fourth Proportional to 339,510.96, 509,146.02 and 99,558.18

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Solution

The fourth proportional to 339,510.96, 509,146.02 and 99,558.18 is: 149,301.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,510.96 : 509,146.02 = 99,558.18 : x
  2. Step 2: Convert to fraction form
    339,510.96/509,146.02 = 99,558.18/x
  3. Step 3: Cross multiply
    339,510.96x = 509,146.02 × 99,558.18
  4. Step 4: Simplify right side
    339,510.96x = 50,689,651,105.44
  5. Step 5: Solve for x
    x = 50,689,651,105.44/339,510.96
  6. Step 6: Final answer
    x = 149,301.96

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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.