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Finding the Fourth Proportional to 245,137.80, 338,329.53 and 229,128.96

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Solution

The fourth proportional to 245,137.80, 338,329.53 and 229,128.96 is: 316,234.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,137.80 : 338,329.53 = 229,128.96 : x
  2. Step 2: Convert to fraction form
    245,137.80/338,329.53 = 229,128.96/x
  3. Step 3: Cross multiply
    245,137.80x = 338,329.53 × 229,128.96
  4. Step 4: Simplify right side
    245,137.80x = 77,521,093,346.19
  5. Step 5: Solve for x
    x = 77,521,093,346.19/245,137.80
  6. Step 6: Final answer
    x = 316,234.76

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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.