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Finding the Fourth Proportional to 315,136.96, 472,705.20 and 93,520.96

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Solution

The fourth proportional to 315,136.96, 472,705.20 and 93,520.96 is: 140,281.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,136.96 : 472,705.20 = 93,520.96 : x
  2. Step 2: Convert to fraction form
    315,136.96/472,705.20 = 93,520.96/x
  3. Step 3: Cross multiply
    315,136.96x = 472,705.20 × 93,520.96
  4. Step 4: Simplify right side
    315,136.96x = 44,207,844,100.99
  5. Step 5: Solve for x
    x = 44,207,844,100.99/315,136.96
  6. Step 6: Final answer
    x = 140,281.37

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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.