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Finding the Fourth Proportional to 343,654.74, 515,274.84 and 154,080.72

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Solution

The fourth proportional to 343,654.74, 515,274.84 and 154,080.72 is: 231,028.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,654.74 : 515,274.84 = 154,080.72 : x
  2. Step 2: Convert to fraction form
    343,654.74/515,274.84 = 154,080.72/x
  3. Step 3: Cross multiply
    343,654.74x = 515,274.84 × 154,080.72
  4. Step 4: Simplify right side
    343,654.74x = 79,393,918,345.08
  5. Step 5: Solve for x
    x = 79,393,918,345.08/343,654.74
  6. Step 6: Final answer
    x = 231,028.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.