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Finding the Fourth Proportional to 331,672, 457,387.68 and 223,021.12

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Solution

The fourth proportional to 331,672, 457,387.68 and 223,021.12 is: 307,554.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,672 : 457,387.68 = 223,021.12 : x
  2. Step 2: Convert to fraction form
    331,672/457,387.68 = 223,021.12/x
  3. Step 3: Cross multiply
    331,672x = 457,387.68 × 223,021.12
  4. Step 4: Simplify right side
    331,672x = 102,007,112,667.80
  5. Step 5: Solve for x
    x = 102,007,112,667.80/331,672
  6. Step 6: Final answer
    x = 307,554.19

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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.