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Finding the Fourth Proportional to 342,863.65, 514,377.59 and 143,072.90

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Solution

The fourth proportional to 342,863.65, 514,377.59 and 143,072.90 is: 214,643.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,863.65 : 514,377.59 = 143,072.90 : x
  2. Step 2: Convert to fraction form
    342,863.65/514,377.59 = 143,072.90/x
  3. Step 3: Cross multiply
    342,863.65x = 514,377.59 × 143,072.90
  4. Step 4: Simplify right side
    342,863.65x = 73,593,492,942.76
  5. Step 5: Solve for x
    x = 73,593,492,942.76/342,863.65
  6. Step 6: Final answer
    x = 214,643.61

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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.