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Finding the Fourth Proportional to 511,431.45, 767,119.55 and 156,445.50

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Solution

The fourth proportional to 511,431.45, 767,119.55 and 156,445.50 is: 234,659.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,431.45 : 767,119.55 = 156,445.50 : x
  2. Step 2: Convert to fraction form
    511,431.45/767,119.55 = 156,445.50/x
  3. Step 3: Cross multiply
    511,431.45x = 767,119.55 × 156,445.50
  4. Step 4: Simplify right side
    511,431.45x = 120,012,400,777.30
  5. Step 5: Solve for x
    x = 120,012,400,777.30/511,431.45
  6. Step 6: Final answer
    x = 234,659.80

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1.5x scale

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.