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Finding the Fourth Proportional to 543,054.72, 814,253.44 and 243,479.68

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Solution

The fourth proportional to 543,054.72, 814,253.44 and 243,479.68 is: 365,072.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,054.72 : 814,253.44 = 243,479.68 : x
  2. Step 2: Convert to fraction form
    543,054.72/814,253.44 = 243,479.68/x
  3. Step 3: Cross multiply
    543,054.72x = 814,253.44 × 243,479.68
  4. Step 4: Simplify right side
    543,054.72x = 198,254,167,010.10
  5. Step 5: Solve for x
    x = 198,254,167,010.10/543,054.72
  6. Step 6: Final answer
    x = 365,072.17

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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.