Home / 231,501.36-319,487.72-129,536.49

Finding the Fourth Proportional to 231,501.36, 319,487.72 and 129,536.49

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Solution

The fourth proportional to 231,501.36, 319,487.72 and 129,536.49 is: 178,769.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,501.36 : 319,487.72 = 129,536.49 : x
  2. Step 2: Convert to fraction form
    231,501.36/319,487.72 = 129,536.49/x
  3. Step 3: Cross multiply
    231,501.36x = 319,487.72 × 129,536.49
  4. Step 4: Simplify right side
    231,501.36x = 41,385,317,199.22
  5. Step 5: Solve for x
    x = 41,385,317,199.22/231,501.36
  6. Step 6: Final answer
    x = 178,769.22

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1.5x scale

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.