Home / 389,311.20-583,563.60-211,442.40

Finding the Fourth Proportional to 389,311.20, 583,563.60 and 211,442.40

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Solution

The fourth proportional to 389,311.20, 583,563.60 and 211,442.40 is: 316,944.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,311.20 : 583,563.60 = 211,442.40 : x
  2. Step 2: Convert to fraction form
    389,311.20/583,563.60 = 211,442.40/x
  3. Step 3: Cross multiply
    389,311.20x = 583,563.60 × 211,442.40
  4. Step 4: Simplify right side
    389,311.20x = 123,390,088,136.64
  5. Step 5: Solve for x
    x = 123,390,088,136.64/389,311.20
  6. Step 6: Final answer
    x = 316,944.61

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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.