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Finding the Fourth Proportional to 206,720.70, 310,081.05 and 56,960.70

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Solution

The fourth proportional to 206,720.70, 310,081.05 and 56,960.70 is: 85,441.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,720.70 : 310,081.05 = 56,960.70 : x
  2. Step 2: Convert to fraction form
    206,720.70/310,081.05 = 56,960.70/x
  3. Step 3: Cross multiply
    206,720.70x = 310,081.05 × 56,960.70
  4. Step 4: Simplify right side
    206,720.70x = 17,662,433,664.74
  5. Step 5: Solve for x
    x = 17,662,433,664.74/206,720.70
  6. Step 6: Final answer
    x = 85,441.05

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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.