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Finding the Fourth Proportional to 245,308.27, 338,553.45 and 136,423.45

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Solution

The fourth proportional to 245,308.27, 338,553.45 and 136,423.45 is: 188,279.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,308.27 : 338,553.45 = 136,423.45 : x
  2. Step 2: Convert to fraction form
    245,308.27/338,553.45 = 136,423.45/x
  3. Step 3: Cross multiply
    245,308.27x = 338,553.45 × 136,423.45
  4. Step 4: Simplify right side
    245,308.27x = 46,186,629,658.40
  5. Step 5: Solve for x
    x = 46,186,629,658.40/245,308.27
  6. Step 6: Final answer
    x = 188,279.95

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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.