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Finding the Fourth Proportional to 561,687.16, 775,073.44 and 319,950.76

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Solution

The fourth proportional to 561,687.16, 775,073.44 and 319,950.76 is: 441,500.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,687.16 : 775,073.44 = 319,950.76 : x
  2. Step 2: Convert to fraction form
    561,687.16/775,073.44 = 319,950.76/x
  3. Step 3: Cross multiply
    561,687.16x = 775,073.44 × 319,950.76
  4. Step 4: Simplify right side
    561,687.16x = 247,985,336,183.81
  5. Step 5: Solve for x
    x = 247,985,336,183.81/561,687.16
  6. Step 6: Final answer
    x = 441,500.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.