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Finding the Fourth Proportional to 230,579.28, 345,879.54 and 70,643.76

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Solution

The fourth proportional to 230,579.28, 345,879.54 and 70,643.76 is: 105,968.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,579.28 : 345,879.54 = 70,643.76 : x
  2. Step 2: Convert to fraction form
    230,579.28/345,879.54 = 70,643.76/x
  3. Step 3: Cross multiply
    230,579.28x = 345,879.54 × 70,643.76
  4. Step 4: Simplify right side
    230,579.28x = 24,434,231,212.67
  5. Step 5: Solve for x
    x = 24,434,231,212.67/230,579.28
  6. Step 6: Final answer
    x = 105,968.89

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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.