Home / 426,139.96-639,043.81-159,755.13

Finding the Fourth Proportional to 426,139.96, 639,043.81 and 159,755.13

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Solution

The fourth proportional to 426,139.96, 639,043.81 and 159,755.13 is: 239,570.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,139.96 : 639,043.81 = 159,755.13 : x
  2. Step 2: Convert to fraction form
    426,139.96/639,043.81 = 159,755.13/x
  3. Step 3: Cross multiply
    426,139.96x = 639,043.81 × 159,755.13
  4. Step 4: Simplify right side
    426,139.96x = 102,090,526,942.25
  5. Step 5: Solve for x
    x = 102,090,526,942.25/426,139.96
  6. Step 6: Final answer
    x = 239,570.41

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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.