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Finding the Fourth Proportional to 321,650.10, 482,705.55 and 134,795.70

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Solution

The fourth proportional to 321,650.10, 482,705.55 and 134,795.70 is: 202,290.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,650.10 : 482,705.55 = 134,795.70 : x
  2. Step 2: Convert to fraction form
    321,650.10/482,705.55 = 134,795.70/x
  3. Step 3: Cross multiply
    321,650.10x = 482,705.55 × 134,795.70
  4. Step 4: Simplify right side
    321,650.10x = 65,066,632,506.14
  5. Step 5: Solve for x
    x = 65,066,632,506.14/321,650.10
  6. Step 6: Final answer
    x = 202,290.11

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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.