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Finding the Fourth Proportional to 339,866.61, 509,800.73 and 103,211.07

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Solution

The fourth proportional to 339,866.61, 509,800.73 and 103,211.07 is: 154,816.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,866.61 : 509,800.73 = 103,211.07 : x
  2. Step 2: Convert to fraction form
    339,866.61/509,800.73 = 103,211.07/x
  3. Step 3: Cross multiply
    339,866.61x = 509,800.73 × 103,211.07
  4. Step 4: Simplify right side
    339,866.61x = 52,617,078,830.08
  5. Step 5: Solve for x
    x = 52,617,078,830.08/339,866.61
  6. Step 6: Final answer
    x = 154,816.85

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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.