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Finding the Fourth Proportional to 340,739.20, 511,108.80 and 334,178.20

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Solution

The fourth proportional to 340,739.20, 511,108.80 and 334,178.20 is: 501,267.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,739.20 : 511,108.80 = 334,178.20 : x
  2. Step 2: Convert to fraction form
    340,739.20/511,108.80 = 334,178.20/x
  3. Step 3: Cross multiply
    340,739.20x = 511,108.80 × 334,178.20
  4. Step 4: Simplify right side
    340,739.20x = 170,801,418,788.16
  5. Step 5: Solve for x
    x = 170,801,418,788.16/340,739.20
  6. Step 6: Final answer
    x = 501,267.30

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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.