Home / 389,188.80-583,977.60-220,838.40

Finding the Fourth Proportional to 389,188.80, 583,977.60 and 220,838.40

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Solution

The fourth proportional to 389,188.80, 583,977.60 and 220,838.40 is: 331,367.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,188.80 : 583,977.60 = 220,838.40 : x
  2. Step 2: Convert to fraction form
    389,188.80/583,977.60 = 220,838.40/x
  3. Step 3: Cross multiply
    389,188.80x = 583,977.60 × 220,838.40
  4. Step 4: Simplify right side
    389,188.80x = 128,964,678,819.84
  5. Step 5: Solve for x
    x = 128,964,678,819.84/389,188.80
  6. Step 6: Final answer
    x = 331,367.91

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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.