Home / 257,031.42-385,318.26-122,012.19

Finding the Fourth Proportional to 257,031.42, 385,318.26 and 122,012.19

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Solution

The fourth proportional to 257,031.42, 385,318.26 and 122,012.19 is: 182,909.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,031.42 : 385,318.26 = 122,012.19 : x
  2. Step 2: Convert to fraction form
    257,031.42/385,318.26 = 122,012.19/x
  3. Step 3: Cross multiply
    257,031.42x = 385,318.26 × 122,012.19
  4. Step 4: Simplify right side
    257,031.42x = 47,013,524,749.59
  5. Step 5: Solve for x
    x = 47,013,524,749.59/257,031.42
  6. Step 6: Final answer
    x = 182,909.64

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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.