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Finding the Fourth Proportional to 229,081.40, 343,038.90 and 218,583.80

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Solution

The fourth proportional to 229,081.40, 343,038.90 and 218,583.80 is: 327,319.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,081.40 : 343,038.90 = 218,583.80 : x
  2. Step 2: Convert to fraction form
    229,081.40/343,038.90 = 218,583.80/x
  3. Step 3: Cross multiply
    229,081.40x = 343,038.90 × 218,583.80
  4. Step 4: Simplify right side
    229,081.40x = 74,982,746,309.82
  5. Step 5: Solve for x
    x = 74,982,746,309.82/229,081.40
  6. Step 6: Final answer
    x = 327,319.22

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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.