Home / 214,654.40-321,981.60-164,985.20

Finding the Fourth Proportional to 214,654.40, 321,981.60 and 164,985.20

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Solution

The fourth proportional to 214,654.40, 321,981.60 and 164,985.20 is: 247,477.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,654.40 : 321,981.60 = 164,985.20 : x
  2. Step 2: Convert to fraction form
    214,654.40/321,981.60 = 164,985.20/x
  3. Step 3: Cross multiply
    214,654.40x = 321,981.60 × 164,985.20
  4. Step 4: Simplify right side
    214,654.40x = 53,122,198,672.32
  5. Step 5: Solve for x
    x = 53,122,198,672.32/214,654.40
  6. Step 6: Final answer
    x = 247,477.80

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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.