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Finding the Fourth Proportional to 348,063.68, 522,020.30 and 123,431.42

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Solution

The fourth proportional to 348,063.68, 522,020.30 and 123,431.42 is: 185,120.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,063.68 : 522,020.30 = 123,431.42 : x
  2. Step 2: Convert to fraction form
    348,063.68/522,020.30 = 123,431.42/x
  3. Step 3: Cross multiply
    348,063.68x = 522,020.30 × 123,431.42
  4. Step 4: Simplify right side
    348,063.68x = 64,433,703,670.57
  5. Step 5: Solve for x
    x = 64,433,703,670.57/348,063.68
  6. Step 6: Final answer
    x = 185,120.45

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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.