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Finding the Fourth Proportional to 520,161.18, 780,467.13 and 183,442.44

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Solution

The fourth proportional to 520,161.18, 780,467.13 and 183,442.44 is: 275,243.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,161.18 : 780,467.13 = 183,442.44 : x
  2. Step 2: Convert to fraction form
    520,161.18/780,467.13 = 183,442.44/x
  3. Step 3: Cross multiply
    520,161.18x = 780,467.13 × 183,442.44
  4. Step 4: Simplify right side
    520,161.18x = 143,170,794,667.00
  5. Step 5: Solve for x
    x = 143,170,794,667.00/520,161.18
  6. Step 6: Final answer
    x = 275,243.14

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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.