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Finding the Fourth Proportional to 379,659, 523,938.54 and 245,756.28

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Solution

The fourth proportional to 379,659, 523,938.54 and 245,756.28 is: 339,149.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,659 : 523,938.54 = 245,756.28 : x
  2. Step 2: Convert to fraction form
    379,659/523,938.54 = 245,756.28/x
  3. Step 3: Cross multiply
    379,659x = 523,938.54 × 245,756.28
  4. Step 4: Simplify right side
    379,659x = 128,761,186,539.03
  5. Step 5: Solve for x
    x = 128,761,186,539.03/379,659
  6. Step 6: Final answer
    x = 339,149.57

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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.