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Finding the Fourth Proportional to 328,902.57, 493,352.91 and 129,083.22

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Solution

The fourth proportional to 328,902.57, 493,352.91 and 129,083.22 is: 193,624.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,902.57 : 493,352.91 = 129,083.22 : x
  2. Step 2: Convert to fraction form
    328,902.57/493,352.91 = 129,083.22/x
  3. Step 3: Cross multiply
    328,902.57x = 493,352.91 × 129,083.22
  4. Step 4: Simplify right side
    328,902.57x = 63,683,582,219.17
  5. Step 5: Solve for x
    x = 63,683,582,219.17/328,902.57
  6. Step 6: Final answer
    x = 193,624.46

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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.