Home / 381,259.35-571,489.99-128,452.50

Finding the Fourth Proportional to 381,259.35, 571,489.99 and 128,452.50

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Solution

The fourth proportional to 381,259.35, 571,489.99 and 128,452.50 is: 192,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,259.35 : 571,489.99 = 128,452.50 : x
  2. Step 2: Convert to fraction form
    381,259.35/571,489.99 = 128,452.50/x
  3. Step 3: Cross multiply
    381,259.35x = 571,489.99 × 128,452.50
  4. Step 4: Simplify right side
    381,259.35x = 73,409,314,440.76
  5. Step 5: Solve for x
    x = 73,409,314,440.76/381,259.35
  6. Step 6: Final answer
    x = 192,544.30

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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.