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Finding the Fourth Proportional to 485,960.15, 728,255.18 and 229,519.36

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Solution

The fourth proportional to 485,960.15, 728,255.18 and 229,519.36 is: 343,955.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,960.15 : 728,255.18 = 229,519.36 : x
  2. Step 2: Convert to fraction form
    485,960.15/728,255.18 = 229,519.36/x
  3. Step 3: Cross multiply
    485,960.15x = 728,255.18 × 229,519.36
  4. Step 4: Simplify right side
    485,960.15x = 167,148,662,830.29
  5. Step 5: Solve for x
    x = 167,148,662,830.29/485,960.15
  6. Step 6: Final answer
    x = 343,955.49

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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.