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Finding the Fourth Proportional to 245,392.88, 338,541.56 and 154,719.92

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Solution

The fourth proportional to 245,392.88, 338,541.56 and 154,719.92 is: 213,450.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,392.88 : 338,541.56 = 154,719.92 : x
  2. Step 2: Convert to fraction form
    245,392.88/338,541.56 = 154,719.92/x
  3. Step 3: Cross multiply
    245,392.88x = 338,541.56 × 154,719.92
  4. Step 4: Simplify right side
    245,392.88x = 52,379,123,079.88
  5. Step 5: Solve for x
    x = 52,379,123,079.88/245,392.88
  6. Step 6: Final answer
    x = 213,450.05

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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.