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Finding the Fourth Proportional to 245,513.94, 338,855.82 and 153,675.84

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Solution

The fourth proportional to 245,513.94, 338,855.82 and 153,675.84 is: 212,101.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,513.94 : 338,855.82 = 153,675.84 : x
  2. Step 2: Convert to fraction form
    245,513.94/338,855.82 = 153,675.84/x
  3. Step 3: Cross multiply
    245,513.94x = 338,855.82 × 153,675.84
  4. Step 4: Simplify right side
    245,513.94x = 52,073,952,777.39
  5. Step 5: Solve for x
    x = 52,073,952,777.39/245,513.94
  6. Step 6: Final answer
    x = 212,101.82

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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.