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Finding the Fourth Proportional to 341,127.40, 511,691.10 and 91,809.40

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Solution

The fourth proportional to 341,127.40, 511,691.10 and 91,809.40 is: 137,714.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,127.40 : 511,691.10 = 91,809.40 : x
  2. Step 2: Convert to fraction form
    341,127.40/511,691.10 = 91,809.40/x
  3. Step 3: Cross multiply
    341,127.40x = 511,691.10 × 91,809.40
  4. Step 4: Simplify right side
    341,127.40x = 46,978,052,876.34
  5. Step 5: Solve for x
    x = 46,978,052,876.34/341,127.40
  6. Step 6: Final answer
    x = 137,714.10

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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.