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Finding the Fourth Proportional to 578,240.88, 866,991.24 and 278,123.82

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Solution

The fourth proportional to 578,240.88, 866,991.24 and 278,123.82 is: 417,007.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,240.88 : 866,991.24 = 278,123.82 : x
  2. Step 2: Convert to fraction form
    578,240.88/866,991.24 = 278,123.82/x
  3. Step 3: Cross multiply
    578,240.88x = 866,991.24 × 278,123.82
  4. Step 4: Simplify right side
    578,240.88x = 241,130,915,575.34
  5. Step 5: Solve for x
    x = 241,130,915,575.34/578,240.88
  6. Step 6: Final answer
    x = 417,007.73

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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.