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Finding the Fourth Proportional to 376,990.65, 520,240.86 and 207,221.13

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Solution

The fourth proportional to 376,990.65, 520,240.86 and 207,221.13 is: 285,961.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,990.65 : 520,240.86 = 207,221.13 : x
  2. Step 2: Convert to fraction form
    376,990.65/520,240.86 = 207,221.13/x
  3. Step 3: Cross multiply
    376,990.65x = 520,240.86 × 207,221.13
  4. Step 4: Simplify right side
    376,990.65x = 107,804,898,881.37
  5. Step 5: Solve for x
    x = 107,804,898,881.37/376,990.65
  6. Step 6: Final answer
    x = 285,961.73

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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.