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Finding the Fourth Proportional to 424,883.73, 637,346.77 and 121,322.91

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Solution

The fourth proportional to 424,883.73, 637,346.77 and 121,322.91 is: 181,990.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,883.73 : 637,346.77 = 121,322.91 : x
  2. Step 2: Convert to fraction form
    424,883.73/637,346.77 = 121,322.91/x
  3. Step 3: Cross multiply
    424,883.73x = 637,346.77 × 121,322.91
  4. Step 4: Simplify right side
    424,883.73x = 77,324,764,208.89
  5. Step 5: Solve for x
    x = 77,324,764,208.89/424,883.73
  6. Step 6: Final answer
    x = 181,990.41

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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.