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Finding the Fourth Proportional to 223,958.52, 309,376.21 and 155,941.45

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Solution

The fourth proportional to 223,958.52, 309,376.21 and 155,941.45 is: 215,417.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,958.52 : 309,376.21 = 155,941.45 : x
  2. Step 2: Convert to fraction form
    223,958.52/309,376.21 = 155,941.45/x
  3. Step 3: Cross multiply
    223,958.52x = 309,376.21 × 155,941.45
  4. Step 4: Simplify right side
    223,958.52x = 48,244,575,652.24
  5. Step 5: Solve for x
    x = 48,244,575,652.24/223,958.52
  6. Step 6: Final answer
    x = 215,417.46

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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.