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Finding the Fourth Proportional to 328,575.94, 492,864.45 and 79,257.94

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Solution

The fourth proportional to 328,575.94, 492,864.45 and 79,257.94 is: 118,887.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,575.94 : 492,864.45 = 79,257.94 : x
  2. Step 2: Convert to fraction form
    328,575.94/492,864.45 = 79,257.94/x
  3. Step 3: Cross multiply
    328,575.94x = 492,864.45 × 79,257.94
  4. Step 4: Simplify right side
    328,575.94x = 39,063,421,006.23
  5. Step 5: Solve for x
    x = 39,063,421,006.23/328,575.94
  6. Step 6: Final answer
    x = 118,887.04

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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.