Home / 389,269.90-583,904.85-220,725.10

Finding the Fourth Proportional to 389,269.90, 583,904.85 and 220,725.10

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Solution

The fourth proportional to 389,269.90, 583,904.85 and 220,725.10 is: 331,087.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,269.90 : 583,904.85 = 220,725.10 : x
  2. Step 2: Convert to fraction form
    389,269.90/583,904.85 = 220,725.10/x
  3. Step 3: Cross multiply
    389,269.90x = 583,904.85 × 220,725.10
  4. Step 4: Simplify right side
    389,269.90x = 128,882,456,406.74
  5. Step 5: Solve for x
    x = 128,882,456,406.74/389,269.90
  6. Step 6: Final answer
    x = 331,087.65

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Similar ratio
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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.