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Finding the Fourth Proportional to 323,988.50, 485,588.72 and 229,245.98

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Solution

The fourth proportional to 323,988.50, 485,588.72 and 229,245.98 is: 343,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,988.50 : 485,588.72 = 229,245.98 : x
  2. Step 2: Convert to fraction form
    323,988.50/485,588.72 = 229,245.98/x
  3. Step 3: Cross multiply
    323,988.50x = 485,588.72 × 229,245.98
  4. Step 4: Simplify right side
    323,988.50x = 111,319,261,993.35
  5. Step 5: Solve for x
    x = 111,319,261,993.35/323,988.50
  6. Step 6: Final answer
    x = 343,590.16

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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.