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Finding the Fourth Proportional to 375,516.13, 561,212.55 and 274,526.78

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Solution

The fourth proportional to 375,516.13, 561,212.55 and 274,526.78 is: 410,282.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,516.13 : 561,212.55 = 274,526.78 : x
  2. Step 2: Convert to fraction form
    375,516.13/561,212.55 = 274,526.78/x
  3. Step 3: Cross multiply
    375,516.13x = 561,212.55 × 274,526.78
  4. Step 4: Simplify right side
    375,516.13x = 154,067,872,485.70
  5. Step 5: Solve for x
    x = 154,067,872,485.70/375,516.13
  6. Step 6: Final answer
    x = 410,282.97

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.