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Finding the Fourth Proportional to 248,670.86, 343,165.82 and 135,493.61

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Solution

The fourth proportional to 248,670.86, 343,165.82 and 135,493.61 is: 186,981.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,670.86 : 343,165.82 = 135,493.61 : x
  2. Step 2: Convert to fraction form
    248,670.86/343,165.82 = 135,493.61/x
  3. Step 3: Cross multiply
    248,670.86x = 343,165.82 × 135,493.61
  4. Step 4: Simplify right side
    248,670.86x = 46,496,773,387.11
  5. Step 5: Solve for x
    x = 46,496,773,387.11/248,670.86
  6. Step 6: Final answer
    x = 186,981.19

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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.