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Finding the Fourth Proportional to 561,881.31, 775,246.73 and 320,158.69

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Solution

The fourth proportional to 561,881.31, 775,246.73 and 320,158.69 is: 441,733.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,881.31 : 775,246.73 = 320,158.69 : x
  2. Step 2: Convert to fraction form
    561,881.31/775,246.73 = 320,158.69/x
  3. Step 3: Cross multiply
    561,881.31x = 775,246.73 × 320,158.69
  4. Step 4: Simplify right side
    561,881.31x = 248,201,978,206.41
  5. Step 5: Solve for x
    x = 248,201,978,206.41/561,881.31
  6. Step 6: Final answer
    x = 441,733.82

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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.