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Finding the Fourth Proportional to 248,515.50, 342,983.79 and 147,913.50

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Solution

The fourth proportional to 248,515.50, 342,983.79 and 147,913.50 is: 204,139.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,515.50 : 342,983.79 = 147,913.50 : x
  2. Step 2: Convert to fraction form
    248,515.50/342,983.79 = 147,913.50/x
  3. Step 3: Cross multiply
    248,515.50x = 342,983.79 × 147,913.50
  4. Step 4: Simplify right side
    248,515.50x = 50,731,932,822.17
  5. Step 5: Solve for x
    x = 50,731,932,822.17/248,515.50
  6. Step 6: Final answer
    x = 204,139.91

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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.