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Finding the Fourth Proportional to 318,580.83, 477,603.41 and 213,077.79

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Solution

The fourth proportional to 318,580.83, 477,603.41 and 213,077.79 is: 319,437.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,580.83 : 477,603.41 = 213,077.79 : x
  2. Step 2: Convert to fraction form
    318,580.83/477,603.41 = 213,077.79/x
  3. Step 3: Cross multiply
    318,580.83x = 477,603.41 × 213,077.79
  4. Step 4: Simplify right side
    318,580.83x = 101,766,678,033.88
  5. Step 5: Solve for x
    x = 101,766,678,033.88/318,580.83
  6. Step 6: Final answer
    x = 319,437.54

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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.