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Finding the Fourth Proportional to 214,938.60, 322,407.90 and 136,141.80

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Solution

The fourth proportional to 214,938.60, 322,407.90 and 136,141.80 is: 204,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,938.60 : 322,407.90 = 136,141.80 : x
  2. Step 2: Convert to fraction form
    214,938.60/322,407.90 = 136,141.80/x
  3. Step 3: Cross multiply
    214,938.60x = 322,407.90 × 136,141.80
  4. Step 4: Simplify right side
    214,938.60x = 43,893,191,840.22
  5. Step 5: Solve for x
    x = 43,893,191,840.22/214,938.60
  6. Step 6: Final answer
    x = 204,212.70

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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.