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Finding the Fourth Proportional to 245,336.65, 338,566.44 and 136,442.51

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Solution

The fourth proportional to 245,336.65, 338,566.44 and 136,442.51 is: 188,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,336.65 : 338,566.44 = 136,442.51 : x
  2. Step 2: Convert to fraction form
    245,336.65/338,566.44 = 136,442.51/x
  3. Step 3: Cross multiply
    245,336.65x = 338,566.44 × 136,442.51
  4. Step 4: Simplify right side
    245,336.65x = 46,194,854,963.82
  5. Step 5: Solve for x
    x = 46,194,854,963.82/245,336.65
  6. Step 6: Final answer
    x = 188,291.70

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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.