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Finding the Fourth Proportional to 507,979.31, 701,012.42 and 281,624.81

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Solution

The fourth proportional to 507,979.31, 701,012.42 and 281,624.81 is: 388,642.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,979.31 : 701,012.42 = 281,624.81 : x
  2. Step 2: Convert to fraction form
    507,979.31/701,012.42 = 281,624.81/x
  3. Step 3: Cross multiply
    507,979.31x = 701,012.42 × 281,624.81
  4. Step 4: Simplify right side
    507,979.31x = 197,422,484,676.95
  5. Step 5: Solve for x
    x = 197,422,484,676.95/507,979.31
  6. Step 6: Final answer
    x = 388,642.77

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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.