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Finding the Fourth Proportional to 381,960.80, 572,768.40 and 171,490.40

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Solution

The fourth proportional to 381,960.80, 572,768.40 and 171,490.40 is: 257,158.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,960.80 : 572,768.40 = 171,490.40 : x
  2. Step 2: Convert to fraction form
    381,960.80/572,768.40 = 171,490.40/x
  3. Step 3: Cross multiply
    381,960.80x = 572,768.40 × 171,490.40
  4. Step 4: Simplify right side
    381,960.80x = 98,224,282,023.36
  5. Step 5: Solve for x
    x = 98,224,282,023.36/381,960.80
  6. Step 6: Final answer
    x = 257,158.02

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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.