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Finding the Fourth Proportional to 250,343.76, 375,516.36 and 72,855

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Solution

The fourth proportional to 250,343.76, 375,516.36 and 72,855 is: 109,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,343.76 : 375,516.36 = 72,855 : x
  2. Step 2: Convert to fraction form
    250,343.76/375,516.36 = 72,855/x
  3. Step 3: Cross multiply
    250,343.76x = 375,516.36 × 72,855
  4. Step 4: Simplify right side
    250,343.76x = 27,358,244,407.80
  5. Step 5: Solve for x
    x = 27,358,244,407.80/250,343.76
  6. Step 6: Final answer
    x = 109,282.71

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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.