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Finding the Fourth Proportional to 245,465.61, 338,744.51 and 136,571.52

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Solution

The fourth proportional to 245,465.61, 338,744.51 and 136,571.52 is: 188,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,465.61 : 338,744.51 = 136,571.52 : x
  2. Step 2: Convert to fraction form
    245,465.61/338,744.51 = 136,571.52/x
  3. Step 3: Cross multiply
    245,465.61x = 338,744.51 × 136,571.52
  4. Step 4: Simplify right side
    245,465.61x = 46,262,852,622.36
  5. Step 5: Solve for x
    x = 46,262,852,622.36/245,465.61
  6. Step 6: Final answer
    x = 188,469.79

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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.