Home / 257,314.92-385,977.24-79,827.72

Finding the Fourth Proportional to 257,314.92, 385,977.24 and 79,827.72

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Solution

The fourth proportional to 257,314.92, 385,977.24 and 79,827.72 is: 119,743.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,314.92 : 385,977.24 = 79,827.72 : x
  2. Step 2: Convert to fraction form
    257,314.92/385,977.24 = 79,827.72/x
  3. Step 3: Cross multiply
    257,314.92x = 385,977.24 × 79,827.72
  4. Step 4: Simplify right side
    257,314.92x = 30,811,683,041.09
  5. Step 5: Solve for x
    x = 30,811,683,041.09/257,314.92
  6. Step 6: Final answer
    x = 119,743.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.