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Finding the Fourth Proportional to 231,887.34, 320,030.33 and 129,929.40

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Solution

The fourth proportional to 231,887.34, 320,030.33 and 129,929.40 is: 179,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,887.34 : 320,030.33 = 129,929.40 : x
  2. Step 2: Convert to fraction form
    231,887.34/320,030.33 = 129,929.40/x
  3. Step 3: Cross multiply
    231,887.34x = 320,030.33 × 129,929.40
  4. Step 4: Simplify right side
    231,887.34x = 41,581,348,109.06
  5. Step 5: Solve for x
    x = 41,581,348,109.06/231,887.34
  6. Step 6: Final answer
    x = 179,317.03

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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.