Home / 320,003.28-479,985.36-133,016.40

Finding the Fourth Proportional to 320,003.28, 479,985.36 and 133,016.40

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Solution

The fourth proportional to 320,003.28, 479,985.36 and 133,016.40 is: 199,516.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,003.28 : 479,985.36 = 133,016.40 : x
  2. Step 2: Convert to fraction form
    320,003.28/479,985.36 = 133,016.40/x
  3. Step 3: Cross multiply
    320,003.28x = 479,985.36 × 133,016.40
  4. Step 4: Simplify right side
    320,003.28x = 63,845,924,639.90
  5. Step 5: Solve for x
    x = 63,845,924,639.90/320,003.28
  6. Step 6: Final answer
    x = 199,516.47

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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.