Home / 389,288.20-583,529.10-211,419.40

Finding the Fourth Proportional to 389,288.20, 583,529.10 and 211,419.40

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Solution

The fourth proportional to 389,288.20, 583,529.10 and 211,419.40 is: 316,910.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,288.20 : 583,529.10 = 211,419.40 : x
  2. Step 2: Convert to fraction form
    389,288.20/583,529.10 = 211,419.40/x
  3. Step 3: Cross multiply
    389,288.20x = 583,529.10 × 211,419.40
  4. Step 4: Simplify right side
    389,288.20x = 123,369,372,204.54
  5. Step 5: Solve for x
    x = 123,369,372,204.54/389,288.20
  6. Step 6: Final answer
    x = 316,910.13

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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.