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Finding the Fourth Proportional to 543,207.20, 814,810.80 and 318,675.20

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Solution

The fourth proportional to 543,207.20, 814,810.80 and 318,675.20 is: 478,012.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,207.20 : 814,810.80 = 318,675.20 : x
  2. Step 2: Convert to fraction form
    543,207.20/814,810.80 = 318,675.20/x
  3. Step 3: Cross multiply
    543,207.20x = 814,810.80 × 318,675.20
  4. Step 4: Simplify right side
    543,207.20x = 259,659,994,652.16
  5. Step 5: Solve for x
    x = 259,659,994,652.16/543,207.20
  6. Step 6: Final answer
    x = 478,012.80

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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.