Home / 305,438.76-457,974.06-136,928.58

Finding the Fourth Proportional to 305,438.76, 457,974.06 and 136,928.58

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Solution

The fourth proportional to 305,438.76, 457,974.06 and 136,928.58 is: 205,310.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,438.76 : 457,974.06 = 136,928.58 : x
  2. Step 2: Convert to fraction form
    305,438.76/457,974.06 = 136,928.58/x
  3. Step 3: Cross multiply
    305,438.76x = 457,974.06 × 136,928.58
  4. Step 4: Simplify right side
    305,438.76x = 62,709,737,712.63
  5. Step 5: Solve for x
    x = 62,709,737,712.63/305,438.76
  6. Step 6: Final answer
    x = 205,310.35

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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.