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Finding the Fourth Proportional to 370,386.49, 511,133.37 and 200,620.61

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Solution

The fourth proportional to 370,386.49, 511,133.37 and 200,620.61 is: 276,856.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,386.49 : 511,133.37 = 200,620.61 : x
  2. Step 2: Convert to fraction form
    370,386.49/511,133.37 = 200,620.61/x
  3. Step 3: Cross multiply
    370,386.49x = 511,133.37 × 200,620.61
  4. Step 4: Simplify right side
    370,386.49x = 102,543,888,480.76
  5. Step 5: Solve for x
    x = 102,543,888,480.76/370,386.49
  6. Step 6: Final answer
    x = 276,856.45

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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.