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Finding the Fourth Proportional to 331,662, 457,373.88 and 223,011.12

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Solution

The fourth proportional to 331,662, 457,373.88 and 223,011.12 is: 307,540.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,662 : 457,373.88 = 223,011.12 : x
  2. Step 2: Convert to fraction form
    331,662/457,373.88 = 223,011.12/x
  3. Step 3: Cross multiply
    331,662x = 457,373.88 × 223,011.12
  4. Step 4: Simplify right side
    331,662x = 101,999,461,237.55
  5. Step 5: Solve for x
    x = 101,999,461,237.55/331,662
  6. Step 6: Final answer
    x = 307,540.39

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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.