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Finding the Fourth Proportional to 376,876.99, 519,570.61 and 300,654.78

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Solution

The fourth proportional to 376,876.99, 519,570.61 and 300,654.78 is: 414,489.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,876.99 : 519,570.61 = 300,654.78 : x
  2. Step 2: Convert to fraction form
    376,876.99/519,570.61 = 300,654.78/x
  3. Step 3: Cross multiply
    376,876.99x = 519,570.61 × 300,654.78
  4. Step 4: Simplify right side
    376,876.99x = 156,211,387,444.02
  5. Step 5: Solve for x
    x = 156,211,387,444.02/376,876.99
  6. Step 6: Final answer
    x = 414,489.06

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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.