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Finding the Fourth Proportional to 248,593.86, 343,060.11 and 135,423.90

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Solution

The fourth proportional to 248,593.86, 343,060.11 and 135,423.90 is: 186,885.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,593.86 : 343,060.11 = 135,423.90 : x
  2. Step 2: Convert to fraction form
    248,593.86/343,060.11 = 135,423.90/x
  3. Step 3: Cross multiply
    248,593.86x = 343,060.11 × 135,423.90
  4. Step 4: Simplify right side
    248,593.86x = 46,458,538,030.63
  5. Step 5: Solve for x
    x = 46,458,538,030.63/248,593.86
  6. Step 6: Final answer
    x = 186,885.30

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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.