Home / 380,456.24-524,910.15-219,288.92

Finding the Fourth Proportional to 380,456.24, 524,910.15 and 219,288.92

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Solution

The fourth proportional to 380,456.24, 524,910.15 and 219,288.92 is: 302,549.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,456.24 : 524,910.15 = 219,288.92 : x
  2. Step 2: Convert to fraction form
    380,456.24/524,910.15 = 219,288.92/x
  3. Step 3: Cross multiply
    380,456.24x = 524,910.15 × 219,288.92
  4. Step 4: Simplify right side
    380,456.24x = 115,106,979,601.86
  5. Step 5: Solve for x
    x = 115,106,979,601.86/380,456.24
  6. Step 6: Final answer
    x = 302,549.85

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1.5x scale

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.