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Finding the Fourth Proportional to 507,660.56, 700,575.72 and 281,309.84

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Solution

The fourth proportional to 507,660.56, 700,575.72 and 281,309.84 is: 388,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,660.56 : 700,575.72 = 281,309.84 : x
  2. Step 2: Convert to fraction form
    507,660.56/700,575.72 = 281,309.84/x
  3. Step 3: Cross multiply
    507,660.56x = 700,575.72 × 281,309.84
  4. Step 4: Simplify right side
    507,660.56x = 197,078,843,701.09
  5. Step 5: Solve for x
    x = 197,078,843,701.09/507,660.56
  6. Step 6: Final answer
    x = 388,209.88

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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.