Home / 257,288.20-386,019.90-162,408.04

Finding the Fourth Proportional to 257,288.20, 386,019.90 and 162,408.04

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Solution

The fourth proportional to 257,288.20, 386,019.90 and 162,408.04 is: 243,667.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,288.20 : 386,019.90 = 162,408.04 : x
  2. Step 2: Convert to fraction form
    257,288.20/386,019.90 = 162,408.04/x
  3. Step 3: Cross multiply
    257,288.20x = 386,019.90 × 162,408.04
  4. Step 4: Simplify right side
    257,288.20x = 62,692,735,360.00
  5. Step 5: Solve for x
    x = 62,692,735,360.00/257,288.20
  6. Step 6: Final answer
    x = 243,667.36

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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.