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Finding the Fourth Proportional to 339,668.32, 509,574.48 and 115,017.88

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Solution

The fourth proportional to 339,668.32, 509,574.48 and 115,017.88 is: 172,551.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,668.32 : 509,574.48 = 115,017.88 : x
  2. Step 2: Convert to fraction form
    339,668.32/509,574.48 = 115,017.88/x
  3. Step 3: Cross multiply
    339,668.32x = 509,574.48 × 115,017.88
  4. Step 4: Simplify right side
    339,668.32x = 58,610,176,391.70
  5. Step 5: Solve for x
    x = 58,610,176,391.70/339,668.32
  6. Step 6: Final answer
    x = 172,551.20

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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.