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Finding the Fourth Proportional to 214,484.38, 321,718.48 and 64,720.68

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Solution

The fourth proportional to 214,484.38, 321,718.48 and 64,720.68 is: 97,078.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,484.38 : 321,718.48 = 64,720.68 : x
  2. Step 2: Convert to fraction form
    214,484.38/321,718.48 = 64,720.68/x
  3. Step 3: Cross multiply
    214,484.38x = 321,718.48 × 64,720.68
  4. Step 4: Simplify right side
    214,484.38x = 20,821,838,794.17
  5. Step 5: Solve for x
    x = 20,821,838,794.17/214,484.38
  6. Step 6: Final answer
    x = 97,078.58

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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.