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Finding the Fourth Proportional to 439,670.48, 659,283.96 and 313,238.48

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Solution

The fourth proportional to 439,670.48, 659,283.96 and 313,238.48 is: 469,699.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,670.48 : 659,283.96 = 313,238.48 : x
  2. Step 2: Convert to fraction form
    439,670.48/659,283.96 = 313,238.48/x
  3. Step 3: Cross multiply
    439,670.48x = 659,283.96 × 313,238.48
  4. Step 4: Simplify right side
    439,670.48x = 206,513,105,518.78
  5. Step 5: Solve for x
    x = 206,513,105,518.78/439,670.48
  6. Step 6: Final answer
    x = 469,699.73

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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.