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Finding the Fourth Proportional to 288,667.78, 433,067.28 and 130,941.34

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Solution

The fourth proportional to 288,667.78, 433,067.28 and 130,941.34 is: 196,441.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,667.78 : 433,067.28 = 130,941.34 : x
  2. Step 2: Convert to fraction form
    288,667.78/433,067.28 = 130,941.34/x
  3. Step 3: Cross multiply
    288,667.78x = 433,067.28 × 130,941.34
  4. Step 4: Simplify right side
    288,667.78x = 56,706,409,953.36
  5. Step 5: Solve for x
    x = 56,706,409,953.36/288,667.78
  6. Step 6: Final answer
    x = 196,441.77

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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.