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Finding the Fourth Proportional to 340,577.10, 509,990.85 and 270,009.90

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Solution

The fourth proportional to 340,577.10, 509,990.85 and 270,009.90 is: 404,321.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,577.10 : 509,990.85 = 270,009.90 : x
  2. Step 2: Convert to fraction form
    340,577.10/509,990.85 = 270,009.90/x
  3. Step 3: Cross multiply
    340,577.10x = 509,990.85 × 270,009.90
  4. Step 4: Simplify right side
    340,577.10x = 137,702,578,409.42
  5. Step 5: Solve for x
    x = 137,702,578,409.42/340,577.10
  6. Step 6: Final answer
    x = 404,321.31

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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.