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Finding the Fourth Proportional to 328,893.47, 493,340.22 and 79,575.47

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Solution

The fourth proportional to 328,893.47, 493,340.22 and 79,575.47 is: 119,363.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,893.47 : 493,340.22 = 79,575.47 : x
  2. Step 2: Convert to fraction form
    328,893.47/493,340.22 = 79,575.47/x
  3. Step 3: Cross multiply
    328,893.47x = 493,340.22 × 79,575.47
  4. Step 4: Simplify right side
    328,893.47x = 39,257,779,876.40
  5. Step 5: Solve for x
    x = 39,257,779,876.40/328,893.47
  6. Step 6: Final answer
    x = 119,363.21

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1.5x scale

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.