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Finding the Fourth Proportional to 229,418.56, 316,712.73 and 143,425.32

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Solution

The fourth proportional to 229,418.56, 316,712.73 and 143,425.32 is: 197,998.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,418.56 : 316,712.73 = 143,425.32 : x
  2. Step 2: Convert to fraction form
    229,418.56/316,712.73 = 143,425.32/x
  3. Step 3: Cross multiply
    229,418.56x = 316,712.73 × 143,425.32
  4. Step 4: Simplify right side
    229,418.56x = 45,424,623,064.76
  5. Step 5: Solve for x
    x = 45,424,623,064.76/229,418.56
  6. Step 6: Final answer
    x = 197,998.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.