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Finding the Fourth Proportional to 381,160.72, 571,337.72 and 128,200.40

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Solution

The fourth proportional to 381,160.72, 571,337.72 and 128,200.40 is: 192,164.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,160.72 : 571,337.72 = 128,200.40 : x
  2. Step 2: Convert to fraction form
    381,160.72/571,337.72 = 128,200.40/x
  3. Step 3: Cross multiply
    381,160.72x = 571,337.72 × 128,200.40
  4. Step 4: Simplify right side
    381,160.72x = 73,245,724,239.09
  5. Step 5: Solve for x
    x = 73,245,724,239.09/381,160.72
  6. Step 6: Final answer
    x = 192,164.93

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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.