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Finding the Fourth Proportional to 216,818.20, 325,616.10 and 157,720.60

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Solution

The fourth proportional to 216,818.20, 325,616.10 and 157,720.60 is: 236,863.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,818.20 : 325,616.10 = 157,720.60 : x
  2. Step 2: Convert to fraction form
    216,818.20/325,616.10 = 157,720.60/x
  3. Step 3: Cross multiply
    216,818.20x = 325,616.10 × 157,720.60
  4. Step 4: Simplify right side
    216,818.20x = 51,356,366,661.66
  5. Step 5: Solve for x
    x = 51,356,366,661.66/216,818.20
  6. Step 6: Final answer
    x = 236,863.73

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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.