Home / 389,612.20-584,015.10-211,743.40

Finding the Fourth Proportional to 389,612.20, 584,015.10 and 211,743.40

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Solution

The fourth proportional to 389,612.20, 584,015.10 and 211,743.40 is: 317,395.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,612.20 : 584,015.10 = 211,743.40 : x
  2. Step 2: Convert to fraction form
    389,612.20/584,015.10 = 211,743.40/x
  3. Step 3: Cross multiply
    389,612.20x = 584,015.10 × 211,743.40
  4. Step 4: Simplify right side
    389,612.20x = 123,661,342,925.34
  5. Step 5: Solve for x
    x = 123,661,342,925.34/389,612.20
  6. Step 6: Final answer
    x = 317,395.97

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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.