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Finding the Fourth Proportional to 552,852.81, 762,935.30 and 311,135.37

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Solution

The fourth proportional to 552,852.81, 762,935.30 and 311,135.37 is: 429,365.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,852.81 : 762,935.30 = 311,135.37 : x
  2. Step 2: Convert to fraction form
    552,852.81/762,935.30 = 311,135.37/x
  3. Step 3: Cross multiply
    552,852.81x = 762,935.30 × 311,135.37
  4. Step 4: Simplify right side
    552,852.81x = 237,376,155,295.88
  5. Step 5: Solve for x
    x = 237,376,155,295.88/552,852.81
  6. Step 6: Final answer
    x = 429,365.92

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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.