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Finding the Fourth Proportional to 425,491.98, 587,161.65 and 231,895.58

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Solution

The fourth proportional to 425,491.98, 587,161.65 and 231,895.58 is: 320,006.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,491.98 : 587,161.65 = 231,895.58 : x
  2. Step 2: Convert to fraction form
    425,491.98/587,161.65 = 231,895.58/x
  3. Step 3: Cross multiply
    425,491.98x = 587,161.65 × 231,895.58
  4. Step 4: Simplify right side
    425,491.98x = 136,160,192,848.41
  5. Step 5: Solve for x
    x = 136,160,192,848.41/425,491.98
  6. Step 6: Final answer
    x = 320,006.48

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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.