Home / 305,124.69-457,856.61-136,638.21

Finding the Fourth Proportional to 305,124.69, 457,856.61 and 136,638.21

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Solution

The fourth proportional to 305,124.69, 457,856.61 and 136,638.21 is: 205,033.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,124.69 : 457,856.61 = 136,638.21 : x
  2. Step 2: Convert to fraction form
    305,124.69/457,856.61 = 136,638.21/x
  3. Step 3: Cross multiply
    305,124.69x = 457,856.61 × 136,638.21
  4. Step 4: Simplify right side
    305,124.69x = 62,560,707,627.07
  5. Step 5: Solve for x
    x = 62,560,707,627.07/305,124.69
  6. Step 6: Final answer
    x = 205,033.25

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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.