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Finding the Fourth Proportional to 518,557.10, 777,860.37 and 252,000.05

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Solution

The fourth proportional to 518,557.10, 777,860.37 and 252,000.05 is: 378,012.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,557.10 : 777,860.37 = 252,000.05 : x
  2. Step 2: Convert to fraction form
    518,557.10/777,860.37 = 252,000.05/x
  3. Step 3: Cross multiply
    518,557.10x = 777,860.37 × 252,000.05
  4. Step 4: Simplify right side
    518,557.10x = 196,020,848,243.72
  5. Step 5: Solve for x
    x = 196,020,848,243.72/518,557.10
  6. Step 6: Final answer
    x = 378,012.08

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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.