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Finding the Fourth Proportional to 339,803.57, 509,703.08 and 115,322.04

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Solution

The fourth proportional to 339,803.57, 509,703.08 and 115,322.04 is: 172,982.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,803.57 : 509,703.08 = 115,322.04 : x
  2. Step 2: Convert to fraction form
    339,803.57/509,703.08 = 115,322.04/x
  3. Step 3: Cross multiply
    339,803.57x = 509,703.08 × 115,322.04
  4. Step 4: Simplify right side
    339,803.57x = 58,779,998,403.27
  5. Step 5: Solve for x
    x = 58,779,998,403.27/339,803.57
  6. Step 6: Final answer
    x = 172,982.28

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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.