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Finding the Fourth Proportional to 245,904.90, 339,339.61 and 137,006.68

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Solution

The fourth proportional to 245,904.90, 339,339.61 and 137,006.68 is: 189,064.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,904.90 : 339,339.61 = 137,006.68 : x
  2. Step 2: Convert to fraction form
    245,904.90/339,339.61 = 137,006.68/x
  3. Step 3: Cross multiply
    245,904.90x = 339,339.61 × 137,006.68
  4. Step 4: Simplify right side
    245,904.90x = 46,491,793,358.59
  5. Step 5: Solve for x
    x = 46,491,793,358.59/245,904.90
  6. Step 6: Final answer
    x = 189,064.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.