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Finding the Fourth Proportional to 629,340.32, 943,660.54 and 208,386.56

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Solution

The fourth proportional to 629,340.32, 943,660.54 and 208,386.56 is: 312,463.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,340.32 : 943,660.54 = 208,386.56 : x
  2. Step 2: Convert to fraction form
    629,340.32/943,660.54 = 208,386.56/x
  3. Step 3: Cross multiply
    629,340.32x = 943,660.54 × 208,386.56
  4. Step 4: Simplify right side
    629,340.32x = 196,646,173,738.34
  5. Step 5: Solve for x
    x = 196,646,173,738.34/629,340.32
  6. Step 6: Final answer
    x = 312,463.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.