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Finding the Fourth Proportional to 230,803.50, 318,509.79 and 124,819.50

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Solution

The fourth proportional to 230,803.50, 318,509.79 and 124,819.50 is: 172,251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,803.50 : 318,509.79 = 124,819.50 : x
  2. Step 2: Convert to fraction form
    230,803.50/318,509.79 = 124,819.50/x
  3. Step 3: Cross multiply
    230,803.50x = 318,509.79 × 124,819.50
  4. Step 4: Simplify right side
    230,803.50x = 39,756,232,732.91
  5. Step 5: Solve for x
    x = 39,756,232,732.91/230,803.50
  6. Step 6: Final answer
    x = 172,251.43

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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.