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Finding the Fourth Proportional to 230,647, 318,292.86 and 124,663

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Solution

The fourth proportional to 230,647, 318,292.86 and 124,663 is: 172,034.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,647 : 318,292.86 = 124,663 : x
  2. Step 2: Convert to fraction form
    230,647/318,292.86 = 124,663/x
  3. Step 3: Cross multiply
    230,647x = 318,292.86 × 124,663
  4. Step 4: Simplify right side
    230,647x = 39,679,342,806.18
  5. Step 5: Solve for x
    x = 39,679,342,806.18/230,647
  6. Step 6: Final answer
    x = 172,034.94

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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.