Home / 257,277.70-385,953.90-79,799

Finding the Fourth Proportional to 257,277.70, 385,953.90 and 79,799

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Solution

The fourth proportional to 257,277.70, 385,953.90 and 79,799 is: 119,710.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,277.70 : 385,953.90 = 79,799 : x
  2. Step 2: Convert to fraction form
    257,277.70/385,953.90 = 79,799/x
  3. Step 3: Cross multiply
    257,277.70x = 385,953.90 × 79,799
  4. Step 4: Simplify right side
    257,277.70x = 30,798,735,266.10
  5. Step 5: Solve for x
    x = 30,798,735,266.10/257,277.70
  6. Step 6: Final answer
    x = 119,710.08

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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.