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Finding the Fourth Proportional to 376,699.21, 519,488.13 and 247,410.15

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Solution

The fourth proportional to 376,699.21, 519,488.13 and 247,410.15 is: 341,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,699.21 : 519,488.13 = 247,410.15 : x
  2. Step 2: Convert to fraction form
    376,699.21/519,488.13 = 247,410.15/x
  3. Step 3: Cross multiply
    376,699.21x = 519,488.13 × 247,410.15
  4. Step 4: Simplify right side
    376,699.21x = 128,526,635,146.23
  5. Step 5: Solve for x
    x = 128,526,635,146.23/376,699.21
  6. Step 6: Final answer
    x = 341,191.68

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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.