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Finding the Fourth Proportional to 339,554.91, 509,381.25 and 102,916.02

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Solution

The fourth proportional to 339,554.91, 509,381.25 and 102,916.02 is: 154,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,554.91 : 509,381.25 = 102,916.02 : x
  2. Step 2: Convert to fraction form
    339,554.91/509,381.25 = 102,916.02/x
  3. Step 3: Cross multiply
    339,554.91x = 509,381.25 × 102,916.02
  4. Step 4: Simplify right side
    339,554.91x = 52,423,490,912.63
  5. Step 5: Solve for x
    x = 52,423,490,912.63/339,554.91
  6. Step 6: Final answer
    x = 154,388.85

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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.