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Finding the Fourth Proportional to 322,339.76, 483,561.48 and 135,404.72

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Solution

The fourth proportional to 322,339.76, 483,561.48 and 135,404.72 is: 203,128.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,339.76 : 483,561.48 = 135,404.72 : x
  2. Step 2: Convert to fraction form
    322,339.76/483,561.48 = 135,404.72/x
  3. Step 3: Cross multiply
    322,339.76x = 483,561.48 × 135,404.72
  4. Step 4: Simplify right side
    322,339.76x = 65,476,506,802.19
  5. Step 5: Solve for x
    x = 65,476,506,802.19/322,339.76
  6. Step 6: Final answer
    x = 203,128.86

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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.