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Finding the Fourth Proportional to 220,411.89, 330,715.58 and 125,638.65

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Solution

The fourth proportional to 220,411.89, 330,715.58 and 125,638.65 is: 188,513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,411.89 : 330,715.58 = 125,638.65 : x
  2. Step 2: Convert to fraction form
    220,411.89/330,715.58 = 125,638.65/x
  3. Step 3: Cross multiply
    220,411.89x = 330,715.58 × 125,638.65
  4. Step 4: Simplify right side
    220,411.89x = 41,550,658,376.97
  5. Step 5: Solve for x
    x = 41,550,658,376.97/220,411.89
  6. Step 6: Final answer
    x = 188,513.69

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1.5x scale

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.