Home / 376,835.52-520,057.28-215,742.72

Finding the Fourth Proportional to 376,835.52, 520,057.28 and 215,742.72

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Solution

The fourth proportional to 376,835.52, 520,057.28 and 215,742.72 is: 297,738.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,835.52 : 520,057.28 = 215,742.72 : x
  2. Step 2: Convert to fraction form
    376,835.52/520,057.28 = 215,742.72/x
  3. Step 3: Cross multiply
    376,835.52x = 520,057.28 × 215,742.72
  4. Step 4: Simplify right side
    376,835.52x = 112,198,572,143.00
  5. Step 5: Solve for x
    x = 112,198,572,143.00/376,835.52
  6. Step 6: Final answer
    x = 297,738.84

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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.