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Finding the Fourth Proportional to 279,091.42, 418,606 and 76,703.04

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Solution

The fourth proportional to 279,091.42, 418,606 and 76,703.04 is: 115,046.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,091.42 : 418,606 = 76,703.04 : x
  2. Step 2: Convert to fraction form
    279,091.42/418,606 = 76,703.04/x
  3. Step 3: Cross multiply
    279,091.42x = 418,606 × 76,703.04
  4. Step 4: Simplify right side
    279,091.42x = 32,108,352,762.24
  5. Step 5: Solve for x
    x = 32,108,352,762.24/279,091.42
  6. Step 6: Final answer
    x = 115,046.00

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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.