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Finding the Fourth Proportional to 245,476.76, 338,754.70 and 138,046.77

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Solution

The fourth proportional to 245,476.76, 338,754.70 and 138,046.77 is: 190,502.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,476.76 : 338,754.70 = 138,046.77 : x
  2. Step 2: Convert to fraction form
    245,476.76/338,754.70 = 138,046.77/x
  3. Step 3: Cross multiply
    245,476.76x = 338,754.70 × 138,046.77
  4. Step 4: Simplify right side
    245,476.76x = 46,763,992,157.32
  5. Step 5: Solve for x
    x = 46,763,992,157.32/245,476.76
  6. Step 6: Final answer
    x = 190,502.73

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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.