Home / 389,930.52-584,895.72-212,586.66

Finding the Fourth Proportional to 389,930.52, 584,895.72 and 212,586.66

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Solution

The fourth proportional to 389,930.52, 584,895.72 and 212,586.66 is: 318,879.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,930.52 : 584,895.72 = 212,586.66 : x
  2. Step 2: Convert to fraction form
    389,930.52/584,895.72 = 212,586.66/x
  3. Step 3: Cross multiply
    389,930.52x = 584,895.72 × 212,586.66
  4. Step 4: Simplify right side
    389,930.52x = 124,341,027,563.10
  5. Step 5: Solve for x
    x = 124,341,027,563.10/389,930.52
  6. Step 6: Final answer
    x = 318,879.96

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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.