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Finding the Fourth Proportional to 375,393.88, 561,678.18 and 263,292.85

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Solution

The fourth proportional to 375,393.88, 561,678.18 and 263,292.85 is: 393,948.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,393.88 : 561,678.18 = 263,292.85 : x
  2. Step 2: Convert to fraction form
    375,393.88/561,678.18 = 263,292.85/x
  3. Step 3: Cross multiply
    375,393.88x = 561,678.18 × 263,292.85
  4. Step 4: Simplify right side
    375,393.88x = 147,885,848,795.01
  5. Step 5: Solve for x
    x = 147,885,848,795.01/375,393.88
  6. Step 6: Final answer
    x = 393,948.48

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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.