Home / 278,782.04-417,939.60-194,294.36

Finding the Fourth Proportional to 278,782.04, 417,939.60 and 194,294.36

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Solution

The fourth proportional to 278,782.04, 417,939.60 and 194,294.36 is: 291,278.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,782.04 : 417,939.60 = 194,294.36 : x
  2. Step 2: Convert to fraction form
    278,782.04/417,939.60 = 194,294.36/x
  3. Step 3: Cross multiply
    278,782.04x = 417,939.60 × 194,294.36
  4. Step 4: Simplify right side
    278,782.04x = 81,203,307,100.66
  5. Step 5: Solve for x
    x = 81,203,307,100.66/278,782.04
  6. Step 6: Final answer
    x = 291,278.83

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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.