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Finding the Fourth Proportional to 214,849.60, 322,389.60 and 90,203.20

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Solution

The fourth proportional to 214,849.60, 322,389.60 and 90,203.20 is: 135,353.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,849.60 : 322,389.60 = 90,203.20 : x
  2. Step 2: Convert to fraction form
    214,849.60/322,389.60 = 90,203.20/x
  3. Step 3: Cross multiply
    214,849.60x = 322,389.60 × 90,203.20
  4. Step 4: Simplify right side
    214,849.60x = 29,080,573,566.72
  5. Step 5: Solve for x
    x = 29,080,573,566.72/214,849.60
  6. Step 6: Final answer
    x = 135,353.17

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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.