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Finding the Fourth Proportional to 425,179, 637,797.66 and 140,869

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Solution

The fourth proportional to 425,179, 637,797.66 and 140,869 is: 211,313.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,179 : 637,797.66 = 140,869 : x
  2. Step 2: Convert to fraction form
    425,179/637,797.66 = 140,869/x
  3. Step 3: Cross multiply
    425,179x = 637,797.66 × 140,869
  4. Step 4: Simplify right side
    425,179x = 89,845,918,566.54
  5. Step 5: Solve for x
    x = 89,845,918,566.54/425,179
  6. Step 6: Final answer
    x = 211,313.16

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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.