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Finding the Fourth Proportional to 376,963.20, 520,192.80 and 207,187.20

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Solution

The fourth proportional to 376,963.20, 520,192.80 and 207,187.20 is: 285,909.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,963.20 : 520,192.80 = 207,187.20 : x
  2. Step 2: Convert to fraction form
    376,963.20/520,192.80 = 207,187.20/x
  3. Step 3: Cross multiply
    376,963.20x = 520,192.80 × 207,187.20
  4. Step 4: Simplify right side
    376,963.20x = 107,777,289,692.16
  5. Step 5: Solve for x
    x = 107,777,289,692.16/376,963.20
  6. Step 6: Final answer
    x = 285,909.31

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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.