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Finding the Fourth Proportional to 345,213.69, 517,838.99 and 108,574.82

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Solution

The fourth proportional to 345,213.69, 517,838.99 and 108,574.82 is: 162,868.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,213.69 : 517,838.99 = 108,574.82 : x
  2. Step 2: Convert to fraction form
    345,213.69/517,838.99 = 108,574.82/x
  3. Step 3: Cross multiply
    345,213.69x = 517,838.99 × 108,574.82
  4. Step 4: Simplify right side
    345,213.69x = 56,224,275,128.23
  5. Step 5: Solve for x
    x = 56,224,275,128.23/345,213.69
  6. Step 6: Final answer
    x = 162,868.03

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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.