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Finding the Fourth Proportional to 339,724.88, 509,598.04 and 87,006.96

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Solution

The fourth proportional to 339,724.88, 509,598.04 and 87,006.96 is: 130,513.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,724.88 : 509,598.04 = 87,006.96 : x
  2. Step 2: Convert to fraction form
    339,724.88/509,598.04 = 87,006.96/x
  3. Step 3: Cross multiply
    339,724.88x = 509,598.04 × 87,006.96
  4. Step 4: Simplify right side
    339,724.88x = 44,338,576,282.36
  5. Step 5: Solve for x
    x = 44,338,576,282.36/339,724.88
  6. Step 6: Final answer
    x = 130,513.19

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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.