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Finding the Fourth Proportional to 553,891.30, 764,370 and 299,242.49

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Solution

The fourth proportional to 553,891.30, 764,370 and 299,242.49 is: 412,954.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,891.30 : 764,370 = 299,242.49 : x
  2. Step 2: Convert to fraction form
    553,891.30/764,370 = 299,242.49/x
  3. Step 3: Cross multiply
    553,891.30x = 764,370 × 299,242.49
  4. Step 4: Simplify right side
    553,891.30x = 228,731,978,259.45
  5. Step 5: Solve for x
    x = 228,731,978,259.45/553,891.30
  6. Step 6: Final answer
    x = 412,954.63

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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.