Home / 389,269.40-583,904.10-220,724.60

Finding the Fourth Proportional to 389,269.40, 583,904.10 and 220,724.60

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Solution

The fourth proportional to 389,269.40, 583,904.10 and 220,724.60 is: 331,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,269.40 : 583,904.10 = 220,724.60 : x
  2. Step 2: Convert to fraction form
    389,269.40/583,904.10 = 220,724.60/x
  3. Step 3: Cross multiply
    389,269.40x = 583,904.10 × 220,724.60
  4. Step 4: Simplify right side
    389,269.40x = 128,881,998,910.86
  5. Step 5: Solve for x
    x = 128,881,998,910.86/389,269.40
  6. Step 6: Final answer
    x = 331,086.90

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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.