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Finding the Fourth Proportional to 376,991.88, 520,248.79 and 215,900.23

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Solution

The fourth proportional to 376,991.88, 520,248.79 and 215,900.23 is: 297,942.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,991.88 : 520,248.79 = 215,900.23 : x
  2. Step 2: Convert to fraction form
    376,991.88/520,248.79 = 215,900.23/x
  3. Step 3: Cross multiply
    376,991.88x = 520,248.79 × 215,900.23
  4. Step 4: Simplify right side
    376,991.88x = 112,321,830,816.98
  5. Step 5: Solve for x
    x = 112,321,830,816.98/376,991.88
  6. Step 6: Final answer
    x = 297,942.31

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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.