Home / 376,991.38-520,248.10-215,899.73

Finding the Fourth Proportional to 376,991.38, 520,248.10 and 215,899.73

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Solution

The fourth proportional to 376,991.38, 520,248.10 and 215,899.73 is: 297,941.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,991.38 : 520,248.10 = 215,899.73 : x
  2. Step 2: Convert to fraction form
    376,991.38/520,248.10 = 215,899.73/x
  3. Step 3: Cross multiply
    376,991.38x = 520,248.10 × 215,899.73
  4. Step 4: Simplify right side
    376,991.38x = 112,321,421,721.77
  5. Step 5: Solve for x
    x = 112,321,421,721.77/376,991.38
  6. Step 6: Final answer
    x = 297,941.62

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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.