Home / 381,667.80-572,720.40-145,180.20

Finding the Fourth Proportional to 381,667.80, 572,720.40 and 145,180.20

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Solution

The fourth proportional to 381,667.80, 572,720.40 and 145,180.20 is: 217,853.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,667.80 : 572,720.40 = 145,180.20 : x
  2. Step 2: Convert to fraction form
    381,667.80/572,720.40 = 145,180.20/x
  3. Step 3: Cross multiply
    381,667.80x = 572,720.40 × 145,180.20
  4. Step 4: Simplify right side
    381,667.80x = 83,147,662,216.08
  5. Step 5: Solve for x
    x = 83,147,662,216.08/381,667.80
  6. Step 6: Final answer
    x = 217,853.49

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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.