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Finding the Fourth Proportional to 328,956.50, 453,986.35 and 261,529.92

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Solution

The fourth proportional to 328,956.50, 453,986.35 and 261,529.92 is: 360,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,956.50 : 453,986.35 = 261,529.92 : x
  2. Step 2: Convert to fraction form
    328,956.50/453,986.35 = 261,529.92/x
  3. Step 3: Cross multiply
    328,956.50x = 453,986.35 × 261,529.92
  4. Step 4: Simplify right side
    328,956.50x = 118,731,013,142.77
  5. Step 5: Solve for x
    x = 118,731,013,142.77/328,956.50
  6. Step 6: Final answer
    x = 360,932.26

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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.