Home / 384,785.48-531,003.12-215,019.61

Finding the Fourth Proportional to 384,785.48, 531,003.12 and 215,019.61

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Solution

The fourth proportional to 384,785.48, 531,003.12 and 215,019.61 is: 296,726.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,785.48 : 531,003.12 = 215,019.61 : x
  2. Step 2: Convert to fraction form
    384,785.48/531,003.12 = 215,019.61/x
  3. Step 3: Cross multiply
    384,785.48x = 531,003.12 × 215,019.61
  4. Step 4: Simplify right side
    384,785.48x = 114,176,083,771.18
  5. Step 5: Solve for x
    x = 114,176,083,771.18/384,785.48
  6. Step 6: Final answer
    x = 296,726.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.