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Finding the Fourth Proportional to 511,839.16, 767,871.06 and 156,879.88

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Solution

The fourth proportional to 511,839.16, 767,871.06 and 156,879.88 is: 235,354.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,839.16 : 767,871.06 = 156,879.88 : x
  2. Step 2: Convert to fraction form
    511,839.16/767,871.06 = 156,879.88/x
  3. Step 3: Cross multiply
    511,839.16x = 767,871.06 × 156,879.88
  4. Step 4: Simplify right side
    511,839.16x = 120,463,519,748.27
  5. Step 5: Solve for x
    x = 120,463,519,748.27/511,839.16
  6. Step 6: Final answer
    x = 235,354.25

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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.