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Finding the Fourth Proportional to 375,870.28, 518,703.06 and 203,789.56

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Solution

The fourth proportional to 375,870.28, 518,703.06 and 203,789.56 is: 281,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,870.28 : 518,703.06 = 203,789.56 : x
  2. Step 2: Convert to fraction form
    375,870.28/518,703.06 = 203,789.56/x
  3. Step 3: Cross multiply
    375,870.28x = 518,703.06 × 203,789.56
  4. Step 4: Simplify right side
    375,870.28x = 105,706,268,368.05
  5. Step 5: Solve for x
    x = 105,706,268,368.05/375,870.28
  6. Step 6: Final answer
    x = 281,230.72

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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.