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Finding the Fourth Proportional to 439,874.65, 659,800.43 and 140,373.51

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Solution

The fourth proportional to 439,874.65, 659,800.43 and 140,373.51 is: 210,556.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,874.65 : 659,800.43 = 140,373.51 : x
  2. Step 2: Convert to fraction form
    439,874.65/659,800.43 = 140,373.51/x
  3. Step 3: Cross multiply
    439,874.65x = 659,800.43 × 140,373.51
  4. Step 4: Simplify right side
    439,874.65x = 92,618,500,398.49
  5. Step 5: Solve for x
    x = 92,618,500,398.49/439,874.65
  6. Step 6: Final answer
    x = 210,556.58

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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.