Home / 388,194.38-581,932.91-208,406.34

Finding the Fourth Proportional to 388,194.38, 581,932.91 and 208,406.34

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Solution

The fourth proportional to 388,194.38, 581,932.91 and 208,406.34 is: 312,416.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,194.38 : 581,932.91 = 208,406.34 : x
  2. Step 2: Convert to fraction form
    388,194.38/581,932.91 = 208,406.34/x
  3. Step 3: Cross multiply
    388,194.38x = 581,932.91 × 208,406.34
  4. Step 4: Simplify right side
    388,194.38x = 121,278,506,856.62
  5. Step 5: Solve for x
    x = 121,278,506,856.62/388,194.38
  6. Step 6: Final answer
    x = 312,416.96

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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.