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Finding the Fourth Proportional to 269,670.80, 372,219.72 and 156,530

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Solution

The fourth proportional to 269,670.80, 372,219.72 and 156,530 is: 216,054.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,670.80 : 372,219.72 = 156,530 : x
  2. Step 2: Convert to fraction form
    269,670.80/372,219.72 = 156,530/x
  3. Step 3: Cross multiply
    269,670.80x = 372,219.72 × 156,530
  4. Step 4: Simplify right side
    269,670.80x = 58,263,552,771.60
  5. Step 5: Solve for x
    x = 58,263,552,771.60/269,670.80
  6. Step 6: Final answer
    x = 216,054.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.