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Finding the Fourth Proportional to 424,883.48, 637,346.39 and 121,322.66

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Solution

The fourth proportional to 424,883.48, 637,346.39 and 121,322.66 is: 181,990.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,883.48 : 637,346.39 = 121,322.66 : x
  2. Step 2: Convert to fraction form
    424,883.48/637,346.39 = 121,322.66/x
  3. Step 3: Cross multiply
    424,883.48x = 637,346.39 × 121,322.66
  4. Step 4: Simplify right side
    424,883.48x = 77,324,559,376.20
  5. Step 5: Solve for x
    x = 77,324,559,376.20/424,883.48
  6. Step 6: Final answer
    x = 181,990.03

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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.