Home / 386,721.34-580,205.03-245,446.61

Finding the Fourth Proportional to 386,721.34, 580,205.03 and 245,446.61

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Solution

The fourth proportional to 386,721.34, 580,205.03 and 245,446.61 is: 368,247.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,721.34 : 580,205.03 = 245,446.61 : x
  2. Step 2: Convert to fraction form
    386,721.34/580,205.03 = 245,446.61/x
  3. Step 3: Cross multiply
    386,721.34x = 580,205.03 × 245,446.61
  4. Step 4: Simplify right side
    386,721.34x = 142,409,353,590.19
  5. Step 5: Solve for x
    x = 142,409,353,590.19/386,721.34
  6. Step 6: Final answer
    x = 368,247.99

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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.