Home / 257,286.96-355,051.44-144,113.76

Finding the Fourth Proportional to 257,286.96, 355,051.44 and 144,113.76

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Solution

The fourth proportional to 257,286.96, 355,051.44 and 144,113.76 is: 198,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,286.96 : 355,051.44 = 144,113.76 : x
  2. Step 2: Convert to fraction form
    257,286.96/355,051.44 = 144,113.76/x
  3. Step 3: Cross multiply
    257,286.96x = 355,051.44 × 144,113.76
  4. Step 4: Simplify right side
    257,286.96x = 51,167,798,011.81
  5. Step 5: Solve for x
    x = 51,167,798,011.81/257,286.96
  6. Step 6: Final answer
    x = 198,874.43

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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.