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Finding the Fourth Proportional to 245,458.84, 338,735.18 and 136,564.77

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Solution

The fourth proportional to 245,458.84, 338,735.18 and 136,564.77 is: 188,460.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,458.84 : 338,735.18 = 136,564.77 : x
  2. Step 2: Convert to fraction form
    245,458.84/338,735.18 = 136,564.77/x
  3. Step 3: Cross multiply
    245,458.84x = 338,735.18 × 136,564.77
  4. Step 4: Simplify right side
    245,458.84x = 46,259,291,947.61
  5. Step 5: Solve for x
    x = 46,259,291,947.61/245,458.84
  6. Step 6: Final answer
    x = 188,460.48

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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.