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Finding the Fourth Proportional to 339,340.52, 509,002.58 and 86,623.11

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Solution

The fourth proportional to 339,340.52, 509,002.58 and 86,623.11 is: 129,932.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,340.52 : 509,002.58 = 86,623.11 : x
  2. Step 2: Convert to fraction form
    339,340.52/509,002.58 = 86,623.11/x
  3. Step 3: Cross multiply
    339,340.52x = 509,002.58 × 86,623.11
  4. Step 4: Simplify right side
    339,340.52x = 44,091,386,044.51
  5. Step 5: Solve for x
    x = 44,091,386,044.51/339,340.52
  6. Step 6: Final answer
    x = 129,932.57

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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.