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Finding the Fourth Proportional to 216,935.12, 325,471.80 and 172,732.88

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Solution

The fourth proportional to 216,935.12, 325,471.80 and 172,732.88 is: 259,154.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,935.12 : 325,471.80 = 172,732.88 : x
  2. Step 2: Convert to fraction form
    216,935.12/325,471.80 = 172,732.88/x
  3. Step 3: Cross multiply
    216,935.12x = 325,471.80 × 172,732.88
  4. Step 4: Simplify right side
    216,935.12x = 56,219,681,372.78
  5. Step 5: Solve for x
    x = 56,219,681,372.78/216,935.12
  6. Step 6: Final answer
    x = 259,154.36

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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.