Home / 257,933.80-387,113.90-131,667.32

Finding the Fourth Proportional to 257,933.80, 387,113.90 and 131,667.32

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Solution

The fourth proportional to 257,933.80, 387,113.90 and 131,667.32 is: 197,609.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,933.80 : 387,113.90 = 131,667.32 : x
  2. Step 2: Convert to fraction form
    257,933.80/387,113.90 = 131,667.32/x
  3. Step 3: Cross multiply
    257,933.80x = 387,113.90 × 131,667.32
  4. Step 4: Simplify right side
    257,933.80x = 50,970,249,747.75
  5. Step 5: Solve for x
    x = 50,970,249,747.75/257,933.80
  6. Step 6: Final answer
    x = 197,609.81

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1.5x scale

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.