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Finding the Fourth Proportional to 283,896.48, 391,369.92 and 223,362.72

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Solution

The fourth proportional to 283,896.48, 391,369.92 and 223,362.72 is: 307,920.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,896.48 : 391,369.92 = 223,362.72 : x
  2. Step 2: Convert to fraction form
    283,896.48/391,369.92 = 223,362.72/x
  3. Step 3: Cross multiply
    283,896.48x = 391,369.92 × 223,362.72
  4. Step 4: Simplify right side
    283,896.48x = 87,417,449,857.38
  5. Step 5: Solve for x
    x = 87,417,449,857.38/283,896.48
  6. Step 6: Final answer
    x = 307,920.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.