Home / 389,624.10-584,144.55-212,331.30

Finding the Fourth Proportional to 389,624.10, 584,144.55 and 212,331.30

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Solution

The fourth proportional to 389,624.10, 584,144.55 and 212,331.30 is: 318,338.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,624.10 : 584,144.55 = 212,331.30 : x
  2. Step 2: Convert to fraction form
    389,624.10/584,144.55 = 212,331.30/x
  3. Step 3: Cross multiply
    389,624.10x = 584,144.55 × 212,331.30
  4. Step 4: Simplify right side
    389,624.10x = 124,032,171,689.42
  5. Step 5: Solve for x
    x = 124,032,171,689.42/389,624.10
  6. Step 6: Final answer
    x = 318,338.04

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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.